Especially with Apple, the ecosystems are so big that the choice given to users is weak. Do users chose between an open phone and a closed one, or between a phone that connects with their laptop and their earphones, or a phone that can Facetime™ their friends and family?

Same kind of problem with presidential elections in democratic republics. Closed systems limit choice.

“Facetime™ their friends and family?”

Pretty much every messaging app has video chat these days.

If you care about an open phone, buy Android. Nothing is going to stop you having a video call with your family and friends.