Most of them aren't spending a bunch of time on forums, unless it's advertising or blogging to promote their business.
We hobbyists who are on the forums every day helping people figure out where to stick the t-stat probe for the UTH they just bought aren't in it for the money, but because we don't want to see a burned snake.
As for producing 3-4 gene animals, there are many I like but can't afford to purchase... but I can afford to purchase the "ingredients". So, I'll make my own, and enjoy the journey along the way.