• 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
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
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
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

Google’s I/O conference showed how the company is being completely rebuilt for AI—for better or for worse
Big TechGoogle
Google’s I/O conference showed how the company is being completely rebuilt for AI—for better or for worse
By Alexei Oreskovic and Sharon GoldmanMay 19, 2026
7 hours ago
Bolt CEO Ryan Breslow
Workplace CultureFortune Workplace Innovation
Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’: 
By Preston ForeMay 19, 2026
8 hours ago
Svenja Gudell, Chief Economist, Indeed
SuccessFortune Workplace Innovation
Indeed chief economist says the sectors most exposed to AI are seeing a big growth in job demand
By Emma BurleighMay 19, 2026
8 hours ago
A Pizza Hut workers prepares an order for delivery.
LawFood and drink
Pizza Hut franchisee claims $100 million losses from ‘cascading operational breakdowns’ in AI adoption gone wrong
By Sasha RogelbergMay 19, 2026
9 hours ago
Santora gestures towards himself
Future of WorkGen Z
WeWork and Upwork CEOs confirm the Gen Z hiring nightmare is real—but it’s nothing new
By Jacqueline MunisMay 19, 2026
11 hours ago
U.S. President Donald Trump speaking at a podium flanked by signs that say "Winning the AI Race."
NewslettersEye on AI
The times they are a-changin’: Washington suddenly warms to regulating AI
By Jeremy KahnMay 19, 2026
11 hours ago

Most Popular

The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
Politics
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
By Jake AngeloMay 12, 2026
7 days ago
Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’: 
Workplace Culture
Bolt CEO says he let go of his entire HR team for creating problems that didn’t exist: ‘Those problems disappeared when I let them go’: 
By Preston ForeMay 19, 2026
8 hours ago
While Trump insisted the Iran war would end ‘soon,’ an account in his name was buying millions in oil, defense, and gold
Economy
While Trump insisted the Iran war would end ‘soon,’ an account in his name was buying millions in oil, defense, and gold
By Eva RoytburgMay 18, 2026
1 day ago
Employers are quietly pausing 401(k) matches again. The last time this happened was the 2008 recession and Covid
Personal Finance
Employers are quietly pausing 401(k) matches again. The last time this happened was the 2008 recession and Covid
By Courtney Vinopal and HR BrewMay 18, 2026
1 day ago
Current price of oil as of May 19, 2026
Personal Finance
Current price of oil as of May 19, 2026
By Joseph HostetlerMay 19, 2026
16 hours ago
Current price of silver as of Monday, May 18, 2026
Personal Finance
Current price of silver as of Monday, May 18, 2026
By Joseph HostetlerMay 18, 2026
2 days 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.