Playing in States, Nit's and Nationals is not earning your way to worlds. Guess you are a little young.
We use to either have to win an NIT or earn one of the four berths at Nationals to go to worlds.
Worlds was 32 - 48 teams pre 2000's
Only the best were there each year that earned it.
Sh@@ back in the day also you actually had to win a qualifier just to go to Labor Day Nationals or get a hand me down.