Well, it's kind of like asking about streaming media. If anyone can have their own "tv show" or anyone can be their own "music producer" then the ratios are so radically altered vis-a-vis content/attention calculation. The question has never been "more means more success stories" because musicians make $.000001 per stream, so even if they stream millions of songs ... you get the point. So surely there are good apps, but the accompanying deluge makes them seem less significant.