The NCAA forces parity in other sports using scholarship limits, men's water polo being the most extreme example with 4.5 equivalents for usually a 20ish man roster to prevent Cal, USC, UCLA, and Stanford from getting the top 80 players and slaughtering everyone else mercilessly.

You can field a team with 65 full scholarships or go to an equivalents model. FBS uses headcount. I believe FCS currently has a 63 equivalent limit (partial scholarships are allowed). D2 has 35 equivalents.