These two start-ups aren’t afraid of Apple by Philip Elmer-DeWitt @FortuneMagazine June 12, 2015, 4:57 PM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Apple stepped on a lot of toes at WWDC. Or at least it threatened to. Some start-ups whose business models sit directly in Cupertino’s path issued some pretty brave statements this week. Rdio, which offers a live-streaming music service in the space Apple Music plans to occupy, put out a cheeky homage to the gauntlet Apple’s threw down in 1991 to IBM: “Welcome, Apple. Seriously. Welcome to the most exciting and important frontier since the digital music revolution began 16 years ago.” (The Next Web) Flipboard, whose magazine-like mobile app could have been the template for Apple’s new News service, struck a similar note: “What Apple was showing is something that we actually shipped five years ago,” said CEO Mike McCue on a BBB podcast. Rdio seems to have forgotten that Apple got bulldozed by IBM. And Flipboard wasn’t exactly setting the publishing world on fire before Apple demoed News. Daniel Ek, co-founder of Spotify, Europe’s leading music streaming service, was more circumspect. And realistic. On Monday he responded to the advent of Apple Music with a two-word tweet: “Oh, ok.” Later he told a Swedish magazine (as translated by Reuters): “To me, it is enough to be among the top three.” Follow Philip Elmer-DeWitt on Twitter at @philiped. Read his Apple AAPL coverage at fortune.com/ped or subscribe via his RSS feed.