That’s my entire point. My SIM card works with any phone. My DVD works on any player. Adobe’s Digital Editions works with any ePub reader. Why shouldn’t iTunes work with Android? If both implemented an open standard, they could.

Re the FLAC/ALAC issue. If FLAC is superior, and an open standard, why doesn’t Apple support it? Is it NIH syndrome? Is it a desire to lock people in? Is it designed to deter people from buying music from outside their ecosystem?

Apple’s web browsers works seamlessly with any web page – why doesn’t their music player do the same with any audio file?
Amazon makes more profit from eBooks than eReaders – so why don’t they sell ePubs?
Microsoft’s new Surface only runs applications blessed by them – can you imagine what that would have done to computer adoption in the early days of the PC revolution? Why is it acceptable now?