ms-13 in south california pay la eme to operate? i don't think so, they sure control some neighbourhoods and some small gang pay them but not so many as you claim
Yes they do, the reason La Eme is able to do this is because they are highly organized and centralized unlike the majority of the gangs in California and because they have control of the prisons. There is no other gang in the U.S that do this or at least to their level.