This seems like a distinction without a difference. Curation is totally allowed, in Apple's own app store. They just can't prevent people from using their devices how they see fit to maintain that curation.
> I think the malaise is when you require every company to take the exact same approach.
I think you're arguing against yourself here. The way to allow companies to take different approaches is to require any app store/approach be allowed. Then Apple can curate, FOSS app stores like FDroid can use their approach, etc.
Fundamentally I think this issue is about ownership. Modern companies/products like to pretend that you don't own the things you buy, because it makes them money. Apple loves their 30% cut of apps, and hides behind "protecting the users" to maintain it, but they really want to control the your device. People would never ever tolerate not being in full control and maintaining true ownership of most things in their lives, but for some reason we let it slide with phones, which, like it or not, are one of the most important objects people own. They should be treated that way, and provided full ownership of them.