This.
It's strange, because it sure does appear that 10-ball caught on with pro tournaments because top players were breaking and running all to often at 9-ball. Then weaker players see that being played and they want to play it. Then the leagues figured out they could even adopt it, by giving their (mostly weak) players points for the 1-9 balls, that would be meaningless balls (other than position and controlling the table obviously). Brilliant idea for the leagues actually, because then their (mostly weak) players can play the "pro game" but win even if they don't ever make a 10-ball, if the handicap is steep enough.
I find that kinda funny though.