• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
TechJack Dorsey

Marc Andreessen blocks Jack Dorsey after Web3 spat with Elon Musk

By
Jane Thier
Jane Thier
Down Arrow Button Icon
By
Jane Thier
Jane Thier
Down Arrow Button Icon
December 23, 2021, 4:59 PM ET
Jack Dorsey—creator, cofounder, and chairman of Twitter and cofounder and CEO of Square—tweeted Friday about hyperinflation.
Jack Dorsey—creator, cofounder, and chairman of Twitter and cofounder and CEO of Square—tweeted Friday about hyperinflation.Photo by Joe Raedle/Getty Images

Venture capitalist Marc Andreesen blocked Jack Dorsey on Twitter yesterday, after Dorsey used his platform to critique venture capital as an industry, doling out specific jabs to Andreessen’s firm, Andreessen Horowitz.

The block follows a string of tweets from Dorsey over several days concerning Web3, a decentralized version of the internet that would be based on blockchain technology. Dorsey said wealthy venture capitalists like Andreessen, rather than “the people,” would “own” Web3. 

“You don’t own ‘web3,’ he tweeted on Monday. “The VCs and their LPs do. It will never escape their incentives. It’s ultimately a centralized entity with a different label. Know what you’re getting into.”

On Tuesday, he followed up by tweeting “The VCs are the problem, not the people.”

Dorsey resigned as Twitter CEO last month to focus, he said, on his digital payments start-up Square, recently renamed to Block. Dorsey has said he doesn’t think there is “anything more important in my lifetime to work on” than bitcoin.

The tiff began when Tesla CEO Elon Musk jokingly asked his active base of nearly 70 million Twitter followers where he could find Web3.

“Has anyone seen web3? I can’t find it,” he wrote.

Dorsey responded by suggesting it was already under Andreessen Horowitz’s control. 

“It’s somewhere between a and z,” Dorsey said, in reference to a16z, as Andreessen Horowitz is better known.

A16Z, created by entrepreneurs Ben Horowitz and Netscape cofounder Marc Andreessen, is one of the most successful and influential venture firms in the world. It generated significant returns after piling early investment in successful startups like Coinbase, Oculus, Slack, Roblox and Airbnb. The firm heavily backs blockchain, crypto and Web3 applications under the oversight of Horowitz, Chris Dixon and a recently departed partner, Katie Haun.

Web3, or Web 3.0, is shorthand for what many Silicon Valley execs believe will be “the next iteration of the internet,” Fortune wrote earlier this month. “We’re currently living in a Web 2.0 world, which is app-based and easy to use. But in Web 2.0, our online lives are currently ruled by trillion-dollar companies like Apple, Facebook, Amazon, and Google.”

On a page on the Andreessen Horowitz website entitled “web3 Policy Hub,” Marc Andreessen is quoted as saying, while his company doesn’t have all the answers, it’s “eager to work with policymakers, civil society, and other partners to define an affirmative vision for how to use these powerful new tools to benefit society.

Shortly before the block, Dorsey stirred the pot some more. “I’m anti-centralized, VC-owned, single point of failure, and corporate controlled lies,” Dorsey tweeted Wednesday. “If your goal is anti establishment, I promise you it isn’t ethereum.”

About the Author
By Jane Thier
See full bioRight Arrow Button Icon

Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

Even Nvidia’s own research teams can’t get enough GPUs amid the race for AI computing power
NewslettersEye on AI
Even Nvidia’s own research teams can’t get enough GPUs amid the race for AI computing power
By Sharon GoldmanApril 9, 2026
6 hours ago
You’re looking at the AI revolution all wrong, top economist says: 40% unemployment and a 3-day work week are the same thing
AIdisruption
You’re looking at the AI revolution all wrong, top economist says: 40% unemployment and a 3-day work week are the same thing
By Nick LichtenbergApril 9, 2026
7 hours ago
Zoom CEO Eric Yuan
Successthe future of work
‘I hate working 5 days’: Zoom CEO says traditional work schedules are becoming obsolete—and predicts a 3-day workweek by 2031
By Preston ForeApril 9, 2026
8 hours ago
Nutella seen aboard the Orion spacecraft Integrity.
RetailFood and drink
Nutella jumps on the best product placement money can’t buy: a trip to the far side of the moon
By Catherina GioinoApril 9, 2026
9 hours ago
kash
Cybersecuritycyber
Trump’s ‘cease-fire’ won’t stop Iranian hackers for long, cyber experts say
By David Klepper and The Associated PressApril 9, 2026
9 hours ago
lego
PoliticsIran
AI-savvy pro-Iran groups troll America with Lego Movie-style propaganda videos mocking American failure
By Sam McNeil and The Associated PressApril 9, 2026
10 hours ago

Most Popular

The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
Economy
The U.S. government is spending $88 billion a month in interest on national debt—equal to spending on defense and education combined
By Fortune EditorsApril 9, 2026
11 hours ago
The U.S. had a national debt ‘home run’ in its grasp, says Jamie Dimon. But the government did nothing, and now its best option is crisis management
Economy
The U.S. had a national debt ‘home run’ in its grasp, says Jamie Dimon. But the government did nothing, and now its best option is crisis management
By Fortune EditorsApril 8, 2026
1 day ago
2 years ago, Saudi Arabia quietly canceled the ‘petrodollar’ deal with America that wired the world economy for 50 years. Then war broke out in Iran
Energy
2 years ago, Saudi Arabia quietly canceled the ‘petrodollar’ deal with America that wired the world economy for 50 years. Then war broke out in Iran
By Fortune EditorsApril 7, 2026
2 days ago
Self-made billionaire MrBeast says his work-life balance is nonexistent and calls it a ‘miracle’ if he works less than 15-hour days: ‘I live to work’
Success
Self-made billionaire MrBeast says his work-life balance is nonexistent and calls it a ‘miracle’ if he works less than 15-hour days: ‘I live to work’
By Fortune EditorsApril 8, 2026
1 day ago
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
AI
Gen Z workers are so fearful AI will take their job they’re intentionally sabotaging their company’s AI rollout
By Fortune EditorsApril 8, 2026
1 day ago
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
Success
Gen Z doesn't want your full-time job. They want several part-time roles, and it's reshaping the entire workforce
By Fortune EditorsApril 9, 2026
15 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.