It's easy.
Not in a traditional raiding PvE format for WoW. We play in a PvP setting called "arena", where it's a team of 3 versus a team of 3. You can choose any class/race and form a team, get sponsored, and get pretty big money playing video games. One of my teammates, plays a Rogue, is 17 years old and already has $120,000 in the bank from Arena tournies. Our sponsor flies the best teams (Each sponsor has a few teams under their auspice) to tournies all over. I've played in St. Louis, Anaheim, New York, and Atlanta. The best teams go to Germany, Amsterdam and Dubai to play in tournaments.
The teams queue against each other in any number of formats, best of 3, best of 5, grudge match, etc. And the team that kills the other team wins. Think "Gladiator".