The guys listed who switched to poker are making more playing poker than anybody who plays pool. John Hennigan plays poker as well. Pool will never be the same way because of the luck involved in poker. A bad poker player usually doesn't realize how bad he really is so he will continue to give away money and keep thinking about the times he sucked out. The same is not true in pool. If you run into a better player, the difference in skill is apparent almost immediately. Even if the better player hides his speed he still won't make tons of money from his opponent. People bet thousands at poker tables they have absolutely no business being at but they don't realize they have the worst of it.
When I was hanging out with Cornflakes he had a bankroll of around 12 million now he is sitting on broke street great pool/poker player but has way too much gamble in him but thats what it takes to play in the biggest games in the world. He is one of the best 7 stub players alive imo. Poker is a lot like pool lifestyle beats you up wears you down and way too many sucumb to temptations. I know dozens of poker players who have won millions only to lose it pit games.