There are Mongolian BBQs elsewhere. I've been to them in NY, CA and MN
but it's never been a favoite of mine (along with salad bars, buffet's
and all you can eat type arrangements).

But you are right... they are not ubiquitous. Of course, they are not
ubiquitous (as in non-existant) in Mongolia... as with Hibachi
Restraunts in Japan.