Makers of novelty applications or simple games are going to shy away from Android because they'll lose impulse purchases.
Honestly, I think this is a good thing for the Android platform. Google and a few devs won't make as much money, but this seems like a good barrier-to-entry to keep out the crApps. If your application isn't worth keeping for more than a day, then it's probably a worthless application, and its presence only serves to take people's money and give them little to no value in return. I think that Google should not only keep this return policy, but openly brag about it.
Cobol programmers are down in the dumps.