I wonder if the problem isn't the AppStore itself. It is so difficult to find good content, and the 'Top 10 Lists' are the primary place people go to find games. This has led to rampant spamming and other dirty tactics to get on these lists, and now there is no market for higher quality content.

I think another problem is scarcity - there isn't any anymore, making it hard for me as a customer to focus on a few higher quality products. Now there are just too many apps.