There are lots of Android devices outside the Play camp (eg Amazon devices, many Chinese ones). Secondly Play won't even start unles you link your Google account to a phone so many people aren't using Play store even on phones that have it.
There's a native Youtube WP app I believe, and decent maps apps as well. Youtube works well in browser too.
No, there's no native Youtube WP app, and "decent" maps don't come anywhere close to detail available through Google maps. Amazon devices don't support the official Youtube app either, nor do they support Google Maps.
There's a native Youtube WP app I believe, and decent maps apps as well. Youtube works well in browser too.