??? I'm not even sure what you're asking. He made the point that if a person has the requisite skills, they will eschew personal preference and seek out the most money that can be made using said skills. To which I replied that fighters obviously do not prioritize money; they utilize their skills in the sport which they prefer, and which typically earns them enough money to train full time/survive. The argument that "all skilled athletes seek out high paying sports like basketball/boxing" is pathetic. This is like saying "anyone with a high iq utilizes it for money." It's simply not the case, and has never been shown to be the case. In fact, the most skilled people in the world, the most intelligent, the most physically gifted, are typically only concerned with testing themselves, regardless of money. I would reckon that most professional fighters would still train and fight if there were no money at all... but even if they were hypothetically capable of becoming a top boxer and making millions, they probably would opt for sticking with mma, so long as they weren't starving.
Secondly, most wrestling and grappling champs that I know of transition to mma because they realize that it represents the culmination of combat sports... has nothing to do with money.