The day Apple creates something similar to Bitcoin you will have something to argue about. Otherwise, your analogy is meaningless.
Read the case I linked. It is sufficient that monopolistic power in one market is used to restrain trade in another market in a way that has a significant effect on interstate commerce. It doesn't matter whether the alleged monopolist has a product in that other market. There are many other reasons a company might have to want to pick winners and losers, even in markets they don't compete in, and the motive for the use of tying to restrain trade is irrelevant. (That's what the quote I pasted means by the words "per se unreasonable" -- doesn't matter why you do it, or whether you will or won't gain from it, it's not a reasonable thing to do. You don't have to prove any particular motive.)
That doesn't mean such a case would succeed. Such cases are very, very hard to win, especially when there are competitors (Android, Windows Phone) and when there's no barrier to entry. See United States v. Syufy Enterprises.
This is why it is imperative that actions against Apple be started in multiple jurisdictions, so for example if an Anti Trust case were to fail in the United States a Competition Case could for example succeed in the EU etc. In the Microsoft case after not much success in the US there was a good success in the EU.