Apple succeeded in what Google has failed with, namely to put value on quality apps. A few small missteps and it will become like Android or Windows Phone.
It can’t because marketing lies and flooding the market with semi functional apps is the end result. The app market is spread out economically but neither users (has to buy a lot of apps to try them out, and because it’s a risk will lower the amount willing to pay) nor developers becomes happy (no clear path through the bad apps).