Earlier quoted context omitted.
There are lots of usecases for apps that don't need these advanced features, and just want a nice backdrop for their geo data. The current offerings of google, mapbox, bing, etc are prohibitively expensive when you just need a small subset of their features. The company I work for is a happy customer of maptiler.com which even offers routing and reverse geocoding. It might not be as great and up to date as google's,…
In this case you should just use Leaflet and OpenStreetMap for a grand total of $0 per month.
As I've said, the solutions are there, and there is an actual demand for cheap vector tile hosting without all of the other cruft that is bundled in the commercial solutions but isn't actually needed.