It definitely sounds like I want to regulate, but for all that I see these as problems, I see prohibition and the usual course of hamfisted regulation as even worse. I accept that people have varied natures and drives, and some will seek edges to the point of self-destruction. Of course, some few will find real edges and prosper too.
I would dream of the kind of solution you're talking about... changing the landscape, but it's hard to imagine that happening in a positive way anytime soon. You're right in your conclusion about the right of people to push themselves, even to destruction. Imagine if the Curies had been told to quit with the experimentation by modern Health and Safety?!
The problem is... Japan. Look at what it's like to work in Japan. They have all of these ideas about what you need to do to be working "110%" (roughly translated). You stay late, leave after the boss, drink like a fish, and a bunch of other things that largely do not improve life or productivity. If the search for an edge were not so tightly bound with how work cultures change, permanently, it would be less of a concern.
Still, the solution, whatever it may be, is not regulating essential freedoms.