Epic may not be saying it but they are doing it. Epic literally bought the company Psyonix, makers of Rocket League and then stole the game Rocket League from people who had bought it and been playing it for years. They literally unreleased the game for MacOS and Linux users. They tried to hide this theft by letting linux and mac users still start the game and look at the menu interface. But playing the game itself no longer works.

Epic is at the forefront of revoking ownership, not Ubisoft.