is not lack of regulation but the fact that 99.9% of the owners of these things have no clue
Not only that, but the companies whom heads “don’t think it’s a big deal,” and providing no real solution to the evident growing problem, yet turn out software and hardware bugs... (every vendor is guilty). The game and the players are basically moving too fast, all because of those investor dollars. It's a technology that even the professional still doesn't understand yet.
a) it is hard to do with a fast moving fixed wing plane,
Considering some autopilots can run on fixed wing nowadays--being hard is not so hard anymore, especially with FPV.
b) traditional model helis are tricky to fly and very expensive, few people would risk their toy like this after they have finally mastered it,
Again, some autopilots can let you flip a switch and they will hold on a dime to keep you out of trouble.
c) few RC models were computerized to the degree that they essentially "fly themselves", including GPS waypoints and what not. RC flying was always about the flying skills, not taking videos for Youtube.
Heck R/C cars can do waypoints now...
Just wait folks, the world is getting started with mobile robots (which R/C is becoming) that can be autonomous from a path control standpoint.