Hardly always good. The mobile app ecosystem on both iOS and Android is a morass of freemium games and ad slop, because the market has determined that hooking one whale is more important than creating a quality product.

The competition will find the most profitable process, not the one that serves customers best necessarily.

The biggest change the iPhone users are going to see an increase in spyware. They'll also notice in a few years a bunch of websites go Chrome only.