All of those things are true today.
The question was: >Should closed hardware (that owns its entire stack) even be legal to sell?
And the answer to that is: obviously it should be, if you care about competition and innovation. The only people that disagree with this are the tech people who have had problems with Apple's business on ideological grounds for decades (people like Richard Stallman and saurik).
But outside that one particularly small constituency, there's no good public policy reason to actually make it illegal, and plenty of reasons not to.