Instead, I’d like to see Apple be forced to provide bootloader unlocks and some basic drivers for alternative operating systems. We own the hardware, after all. Then they could have their walled garden and people who wanted more could run something else.
It’s also a simpler and more generalizable goal, in my opinion. If you own it, you should have low level access. That sounds more reasonable than forcing a corporation to add open App Store access, maintain it, and deal with whatever market effects precipitate.