I don't think i misunderstood you at all, Any company can create a new mobile ecosystem, is it easier, No, but is not impossible, for the most part it is very hard to change people habits, so a new mobile ecosystem will have almost no new users in the beginnings.
whatever you or i think, in the eyes of the laws (As written) people have another choice which is android, now you and many others might not like that other choice, but as long as the choice is available there is not a Monopoly, the laws at least in America don't care about Duopoly since by definition they are more than one.
and as far as considering a mobile phone indispensable, it is not, if its your only computing device maybe you could make a case for this, but as it stands not indispensable they are other choices for getting online.
That absurd comparison between consoles is the same, have you heard of PC's to get online and do some work, mobile devices are a modern time nicety, i can guarantee you will survive without one,
I'm not allowed any mobile devices at work.
I'm still alive and successful.