The japan have a good system where imports get 400-1.2mill, overwhelming these imports are 4 and 5 men. They go after high profile Asian players to get eyes on the league. The Japanese low and mid tier players get paid very little, less than 100k. N.T or fringe national team players also get less than imports, bar 2-3.
1 the Japanese get a chance of naturalising quality big men for the n.t
2 the Japanese guards and forwards get lots of exp vs bigger, taller more athletic bodies.
3 best Japanese post prospects are fast tracked and get exp vs high quality import bigs
4 they develop enormous amounts of 1-2-3 men across 3 divisions, 54 teams for little $$
5 they develop lots of Japanese coaches and trainers, more than 250 in a 3 tier system.
6 young prospects are brought into the clubs and can train or exp professional system.
7 travel and logistics costs are very small
8 stadiums are appropriately sized, 5,000 is avg in a country of 125 million.
9 the senior clubs have good connection all,the way down to jnr level.