Response A: It seems it would take some IMMENSE market changes. IBM can make lots of money off of hardware and services; Google can make money off advertising. Unless they manage to slip in (or except when they can manage to slip in) advertising sufficient to make the money they would like, content providers are going to be mighty resistant to doing something like IBM did.
Response B: It seems to me that you would predict there will be no DRM clients offered by content providers to Android. (I don't understand the intricacies of how Android is not as open as Maemo, but apart from that ...) Yes?
It wouldn't be a particularly big deal to put a couple of closed DRM media player plugins into the mix. They might have to make it closed 'all the way to the speakers / screen', but I really don't believe there'd be outrage in the community over it. Those who don't like it wouldn't use it.