Y Combinator, a prominent startup accelerator and large-scale investor in Epic Games, has filed an amicus brief supporting Epic Games in its ongoing antitrust lawsuit against Apple. The brief argues that Apple’s App Store fees act as a "punitive tax on innovation" and hinder the growth of startups by imposing excessive costs. Y Combinator has urged the court to deny Apple's appeal in the case, emphasizing the negative impact of the App Store's fee structure on emerging technology companies. This development adds a new dimension to the legal battle between Epic Games and Apple, highlighting broader concerns within the tech community about the App Store's influence on innovation and startup development.