Skateboarding is different than basically any other sport. In traditional sports, being professional is about one's marketability, skill, and personal conduct. Pro basketball players cant post pictures of rolling blunts on instagram, its about being professional from a sense of accountability too.
Im not saying skateboarding is anything like any other sport (might not even be a 'sport' but there is some athleticism to it), but I coupd find a skatepark kid anywhere with as much skill as say TK, but they might not be marketable or able to handle the pressures of professionalism.
I hate to say it, but to me, guys like moose, forrest, etc. arent pro. They didnt have a long enough run. Guys like Jereme Rogers and Devine Calloway are pro bec of the work they put in, the exposure they had, and other factors that have nothing to do with skills on the board.
Lastly, Jereme was pro for girl and plan B before he made his own boards with his name on them. Guys like Andy Schrock who started their own companies are not pro skateboarders. It has nothing to do with the industry either. Youtube pros might understand SEO and marketability thru social media but they are not relevant in the traditional sense what so ever.