@Pyromania
I can't speak to Windows 7 Mobile specifically, but in general, Microsoft doesn't censor developers. I love my iPhone for what it is (and hate it for what it isn't, i.e. a reliable phone), but Apple's control over software distribution is scary stuff.
Software distribution in general is about to get even scarier thanks to Vernor v. Autodesk. Say goodbye to used software. Say goodbye to libraries. Hell, say goodbye to retail, period. If we take the ruling to its ultimate conclusion, all software developers will have to license software directly to end users, as wholesalers and retailers won't be allowed to transfer their copies. That's stupid, of course, so new software licenses will have to include specific language allowing wholesale and commercial resale, but not individual resale. I'm really not sure how that's going to work in practice.