CAX show organizers have provided games every year. It sounds like your expectation is that the show organizers should provide all the games for tournament? There are very few tournaments where that happens. Locals should be providing machines, and are compensated for their effort with show passes and other offers.
The difficulty (in 2014 anyway) was the transition from "lots of games brought up from So Cal" (a crapload of work by Jim and Brent and Laura and Dan and others) to "all the games are coming from No Cal". In 2014 this clearly did not work well, but it was better in 2015. I can't speak for Greg but I know he's done more in this direction than I ever did, and I'm very happy he's in charge.
CAX hasn't taken a dime, let alone a "chunk" (whatever that is), from the prize pool in the last 3 years. I don't know about 2013 because I wasn't there, but Steinman was there and I suspect the same thing happened. The only "chunks" removed from the prize pool pay for the trophies, the casual and kids tournaments, and the bounty payoff for top score on each machine. The show's take is $0.
Like I said before, I don't understand why CAX has a reputation for "taking" from the prize pool. It doesn't happen. It sounds like we need to prepare some more obvious evidence of this fact for 2016.