Part of the barbed hook question is because in many jurisdictions and many countries it’s perfectly legal to use barbed hooks so making 2 identical lures with different hooks on them becomes labour intensive and ultimately costs companies more. look at The Campbell River area. If you fish in front of the city you can use treble hooks all year except July 15-sept 30, but go a mile out, trebles are legal year round. If you’re a lure manufacturer it doesn’t make allot of sense to sell single hooks on their lures for such a small window where trebles are banned. It’s easier to leave it up to the angler to rig their gear according to the regs. Speaking from experience when we would sell lures with single hooks on them, we got an earful from anglers who only fish trebles, and if course vice versa.