What's the lesson to be learned from the success of Apple's Music Store? Is it the low price? Great UI? Security? Integration? Portablity?
Microsoft wants to duplicate all of these things, but the one thing they underestimate is the whole ownership thing. For all the talk about Property, they think IP rental is the next big thing.
I'm not opposed to business model experimentation, but as I've said before:
Don't expect people to take your moralizing about Intellectual Property very seriously if you insist on an IP Rental Scheme.