"What's in your wallet?"
For my money it's stupid for pool to even have a world championship. I said years ago that it would be far better to have a Grand Slam scenario, and structure the year around four large tournaments promoted in different regions by different bodies, along the lines of tennis and golf. Having multiple governing bodies and independent events all competing to have their own 'World Championship' where they either try to out do each other, or worse try and ruin each others' events' credibility or whatever benefits no one. In the Grand Slam structure the promoters and governing bodies can all make their events as big as they want, and it only serves to benefit the game, and of course the players.
And the determination of which events would be considered majors would be made by the evolution of the support by the players, fans and followers of the game rather than by some arbitrary sanction by a specific group.