Re: Pulling dick moves has historically worked really well for Apple.
Every version of XCode, and OS redacts some more useful things, and prevents old software from working, like 32 bit stuff. And users get to use a 'free' OS update which means that software magically stops working so they have to update it at cost.
You have to pay $100 a year just to be a developer on one OS type, otherwise it warns the user that your software is 'unknown' when installing, even if you paid Apple at the time the software was first sold.
That will make far more than seven but I can't be arsed to detail any of it, because as a developer, I fucking hate Apple, sorry. They've got to be the biggest twats of them all.