Well, they cannot really disabled it remotely (it's not like that functionality exists in the current code base atm, maybe in future Unity version).
But they could kill your license so you won't be able to build your game using their tool anymore (however you could also just grab a new license under a different name).
What I wonder tho is if they are going to go to the length of asking platform holder like Apple / Google to delist your game and would they actually comply with Unity on this?
Definitely but Unity itself isn't really doing something "legal" here with their extortions, but I guess time will tell with the eventual legal battles.
But they could kill your license so you won't be able to build your game using their tool anymore (however you could also just grab a new license under a different name).
What I wonder tho is if they are going to go to the length of asking platform holder like Apple / Google to delist your game and would they actually comply with Unity on this?