Have you heard of Android? Graphene OS? You do have freedom of choice here
That would immediately exclude 124 million Americans. Freedom of choice would be giving us the same choice we already have on PCs. We shouldn't keep allowing the mobile duopoly to control this vital and ubiquitous resource for their profit at our expense.
I can run Android on Apple hardware? I have freedom to purchase. There is no choice.
Unless you want third party WebViews... (on normal Android)
(Technically besides the point, but that is a broad statement)
Not for long if Google has any say about it. Hardware remote attestation is here, and it's the number one threat to mobile computing freedom.
The future is one where everyone can, theoretically, install anything they want, but they get banned from everything should they actually do so. Rooted system? Attestation fails. "Oh no, looks like someone tampered with the system". Can't access your bank account. Can't communicate via WhatsApp. Can't watch something on the streaming services. Can't even play video games.
Discrimination against "untrustworthy" devices, where "untrustworthy" means not corporate owned. Leading to complete ostracization.