Is the US situation that bad regarding game diversity ?

I am in a very active club, and less than half of the games are D&D and clones (including pathfinder and OSR in D&D and clones), before that I was part of an active online community, and again while D&D was big it wasn't more than half of the game ran.

And if you look at new games starting, due to D&D tendency to be relatively long campaign, it's even hard to find a seat at a D&D game because relatively few games starts compared to other games. (And then there is a couple of indie-game one-shots GM, meaning that there is always a slot open for a less known and often weirder game)