If Amazon are going to maintain an Android fork, I wonder how well Android apps will be able to play with it. It would be a huge disappointment if 2.2+ apps were unavailable (or installing Google Market for that matter). I can see why Amazon has gone down this path, but I do wonder if it's the right thing, rather than doing everyone's favorite/most hated carrier-specific bolt-ons instead. I also hope that Amazon does…
It seems like Amazon is gambling here that most users don't really care about apps that much, which jibes with my own intuitions about the android market. If you have a good web browser and email client the rest is unnecessary gravy, at least to a lot of people.
I would posit that they believe people care about apps a great deal, and that Amazon would like to be positioned to make some money from that demand, either through a cut of sales or by making their hardware more attractive since it "has apps."
They're the original kings of one-click buying, before Apple even sold apps. They'll make a killing and so will any developers who hitch their wagon to Amazon's strategy.