Lheticus
Legend
Silver Level
Well , in your initial conditions , I would say a professional poker player is a person that has enough money to pay his bills and to waste the rest with what he wants. He can goes to the mall , buy new clothes, new electronic stuff, and in the end of the month, he can sleep without thinking about money issues.
I'm not sure I'd go THAT far. There's plenty of professionals in every field these days who don't fulfill that criteria.