Permission makes sense for an established breeder to breed in another breeders breed. (Say that 5 times fast).
But if I'm Blue Dreamer and I want to start Blue's Weed Breed LLC, no established breeder is going to let Timmy Shit for Spit use their genetics because they have no clue if he's legit or if he throws dogs out of 2nd story windows.
So yeah, at least recognizing them.
I mean if I were to say cross a strain from one breeder with a strain from another, hit on something awesome, grow a bunch out looking for the best phenotypes, etc etc, would I be out of line to market and sell that? I don't think so. But it would be wrong to lie about where the genetics came from.