Twitter has been busy for Elon Musk this Friday. Musk now tweets his support for Epic Games' fight against Apple over App store policies, after flatly denying that he ever spoke to Apple CEO Tim Cook.He said that Apple app store fees are a global tax and a de facto tax on the Internet. Epic is correct.Apple app store fees have become a global tax. Epic is correct. Elon Musk (@elonmusk), July 30, 2021Epic is currently involved in a legal dispute with Apple. Epic argues that Apple's App Store rules which allow Apple to take a 30% commission on many App Store transactions, are unfair and anticompetitive.Maybe trying to capitalize on the huge spotlight Musk is bringing into the fight by tweeting it to his 58.7million followers, CEO Tim Sweeney posted his latest attack against Apple just 25 minutes after Musk's tweet. Sweeney stated that all physical goods will be digitally accessible in the future and that Apple will tax and maintain global commerce. Apple must be stopped.The Apple Tax is much more dangerous than most people realize. They claim it only applies to digital goods that are accessible via iOS. However, in the future, all physical goods will be digitally present and Apple will tax and gatekeep global commerce. Apple must be stopped. Tim Sweeney (@TimSweeneyEpic), July 30, 2021Apple has yet to respond to our request for comment. Epic pointed out The Verge's tweet to Sweeneys.Epic and Apple fought in court for much the month of May. While we still await a verdict on our lawsuit, the trial revealed all kinds of interesting information. Epic also filed an antitrust lawsuit against Google for Play Store policies. However, that case is progressing more slowly.Updated July 30, 2013, 3:28 PM ET: We were referred to Sweeneys tweet by Epic.