This might actually work. One of the main reasons why Apple's App Store took off is that 100 million customers already had an iTunes account with a credit card

This might actually work. One of the main reasons why Apple's App Store took off is that 100 million customers already had an iTunes account with a credit card on file. Amazon is one of the few other online retailers that has payment details for 100 million customers. Along with tons of retail experience, that gives it a huge advantage over Google. The only thing that worries me is that Amazon is still very US-centric. It only has localized sites for Canada, China, France, Germany, Italy, Japan, and the United Kingdom. 8 countries is far too few. Compare that to the 91 countries where Apple has App Stores.