Yes there are large farmers in Norway that are using black soldier fly protein meal and its being produced in large scale in e.g. NL and France. But so far only a fraction of the feed has been replaced due to cost and availability of the meal. Consumers typically think insects are icky and would rather not have their food eating insects even if its their natural diet. There are also great progress on terrestrial epa and dha omega-3 in plant oils but its gmo so again people dont want it