Flin Flon? Canada is awesome.

Mostly, we have ATT, VZW, TMO, and Sprint duking it out over most of the customers, while second tier carriers (regional, usually) and MVNOs clean up the scraps. Not too many are doing much of note in terms of disrupting, although there are a few on the horizon. I think that a lot of it has to do with spectrum - there just isn't enough for upstarts, so they end up riding on the main networks of the big 4, or reselling them as an MVNO.