I can attest that escamoles are indeed quite good. They can be found at a lot of trendier restaurants in Mexico City. As someone who also has an interest in permaculture, I'm interested in your idea. All practicalities aside, I think the largest hurdle would be developing new markets. As it stands, I believe escamoles aren't that popular outside of Central Mexico.

Edit: Wanted to add that for a while I've toyed with the idea of using BSF larvae to feed trout in an aquaculture/aquaponics system. The biggest issue for me is that trout require a much lower stocking density than most other fish suitable for aquaculture. I'm just not into tilapia.