Who Really Owns your Local Hobby Shop and RC Car Brands?

Horizon Hobbies had been accused by some of being a monopoly after owning at least 23 different hobby brands. But are they really? And how did they come to own so much of the RC hobby world? Likewise, with AMain buying Hobby Town, we compare and contrast each company's philosophies and strategies to take over the radio controlled hobby, looking looking at how this affects the hobbyists around the world.