The mushroom picking has some money in it so it’s competitive. Some Asian groups don’t play well (or pick well as they have mistaken toadstools for Asian mushrooms and paid the price). Some Thai friends of ours have been threatened by competitors.
There have been killings over picking “Salal” (SP?) out near Forks, WA. Wild greenery that florists add to their arrangements. Same thing - good money and real competitive. I do wonder about the time of year for mushrooms. The ones in my yard came and went awhile ago.