Oh, hey. I had no idea that workplace laws evaporate once you make a certain amount of money. That's a neat idea. Did you get it from Karl Marx?
Your MMA example sounds like it was written by someone who's done too much MMA. In that sport, the fighters
employ the doctors, and fights can be postponed when there are medical issues. Likewise, Evel Knievel was his own boss. He did the promotion, secured the contracts and ran the show. If something went wrong at his show and he was hurt, who exactly is he going to sue? Himself? But if someone else who worked on the show had been hurt, I'm gonna go ahead and assume that the "stunt shows are dangerous" line would not have held up in court.
And let's not forget... acting can be dangerous too, especially if you're on an action movie. Lots of running, and jumping, and explosions. But you know that going in, right? And it pays well! So if you fall down the stairs or tear your ACL or get decapitated by a helicopter -- like Vic Morrow did on The Twilight Zone movie -- then you're just **** out of luck. It's not like he didn't know there was a helicopter in the shot and that helicopters are known to crash. But... let's not forget acting is lucrative. I mean let's definitely not forget that. Which means that according to Judge BlueFin, the Morrow family could go **** themselves. With a helicopter blade, presumably.
The difference between a street corner magician who lights himself on fire doing a dangerous trick and a guy who works for the circus and lights himself on fire doing a dangerous trick... is not a small one. Workers comp should be available to all workers if they're injured on the job to the point where they're no longer employable. Doesn't matter if they're driving a truck and crash or if they're a high priced defense lawyer who gets his skull kicked in and can't talk anymore because he couldn't get a guy out of jail.