How is this a valid comparison? A Big Mac is an end product not an intermediate. I suppose you could say it is an intermediate product for condiments. In which case McDonald's does not have a monopoly on what condiments you can put on your Big Mac.
Even if you did think it was a valid comparison they don't really have a monopoly on the sale of Big Macs. They have a trademark (or whatever) on the name Big Mac but there are plenty of burgers that are very similar and you are free to create a burger that is identical in form to what McDonald's sells.
There is Google, RIM, Palm. There soon will be Microsoft. Nokia, too. They all will sell mobile apps so I don’t see the problem with Apple being the only one to sell iPhone apps if – and only if – they lose their dominant position in this wider group of those who sell mobile apps.
They can keep their monopoly on selling iPhone apps if they want to. I think that’s unfortunate but not something that has (necessarily) to be stopped. As I said: if they lose their dominant position, if you can get perfectly good mobile apps from any of those companies I mentioned.
Monopolies are OK as long as...