Russell hits all the right buttons as far as I’m concerned. With Android devices popping up in all sorts of different form factors, custom UIs and from vendors with completely different approaches regarding OS updates (or, in most cases, planned obsolescence), it’s going to get pretty ugly pretty fast - and regardless of it all saying Android, developers are going to have some serious trouble providing apps that can run across all the versions and UIs variations. For the old farts in the audience, it’s like the Linux desktop wars all over again, but in a pint.
Update: here are some stats that give you an idea of how fast things are going to the dogs already.