if someone uses your software in a way that is honoring the GPLv3, but you don't like, you lose any ability to sue or further restrict them. Even though the ghost of Steve Jobs (Forstall) is no longer haunting the building, Apple learned the lesson of "sue early, sue often", and Stallman/Moglen sort of got in the way of that with GPLv3.

Tivoization was another issue, especially with Apple's tendency to lock down their platform.