All good points, but why are the Android OEM's even in this game when they don't make any money? To sell an OS designed for Google to pull data and sell ad's from? I am surprised it's gone on this long. Apple makes the bulk of the money on phones.
Some OEMs just don't have sensibility. HTC overpriced its HTC 11 by a lot. It's better to sell by volume than on maximizing margin if you don't market a product nor have a strong brand. HTC makes quality products but their brand diluted itself over time.
The other category also features strong performers that need to establish footholds into the States. Huawei is an example since AT&T will feature one of their flagships at some point in the future.