There are lots of male escorts. However, the clientele for male escorts is primarily male as well. e.g., rent boys, etc.
There was a guy on mASF (old seduction forum) who apparently dabbled as a male escort serving women for a while. White guy serving women in Japan. He was in his early 30s I believe, said his clients were primarily Japanese married women in their 40s and up. Even then it sounded like demand was occasional.
Jon Voigt (Angelina Jolie's father) and Dustin Hoffman have the Academy Award Best Picture-winning 1969 film Midnight Cowboy about trying to make it as a male escort serving women in New York City. Recommend that for a fun viewing. You've probably heard the line, "Hey, I'm walking here! I'm walking here!" That's where this line comes from (improvised by Hoffman when a car almost hit him filming a scene). Anyway, I think this flick does a pretty fair job of showing what it's usually going to be like trying to make it as a man serving women for cash in a big city.
Chase