[Balgair]

Top talent is also going to these lesser leagues. Mason Cox was a top NCAA basketball player and got recruited to play AFL in Australia. There's quite a pipeline now because that. Same goes for Australia to US football kickers and punters.

Most of these sports are so variable that they qualify as 'unkind' learning environments, per David Epstein's work. Meaning that a large variety of other education is preferable. Patrick Mahomes is a great example. His baseball training has made him a great quarterback.

Point is, if the sport is sufficiently 'unkind' then any player from other sports should be just fine transferring over