I think we'd need to determine if we're talking about hard use or abuse. Busse seems to promote and market this mores than any other knife. For good reason, busse knives are basically made to be abused. And I guess that sometimes means .25"+ knives with 60 degree edges.
Most other knives don't come like that.
The hardest I am with my knives is probably batoning store bought Firewood. That wood is hard as hell. Every knife I've used has chipped batoning store bought firewood. Yes I'll baton even through knots, but bk2's, handmade 3v camp knives and even a bg ash-1. They've all chipped to the point I've had to take them to the cutlery shop to sharpen them out.
During some other hard use, I've seen a sykco 411's edge just roll over. To the point I couldn't fix it. On the infi side, I've received blades that weren't choppers that didn't have an edge on them at all. Since I don't chop wood they were basically the proverbial pry bar. Of course those can be beat on.
But the question is "Are busse knives the only high end production knives actually being used". I guess the answer is different for everyone but for me, busse knives were used far less than any other knives. Basically because when you throw out chopping, the performance isn't up to snuff.
If I'm going in the back country, I'm not bringing a busse. I'm bringing an lt wright, a BHK, a big Chris, Gossman, or Sargent edged tools. They just perform better at everything I use a knife for.
To suggest that busse owners are the only people listing their knives is just silly. I'm an example, I've had several busse and kin and no, I don't use them much. Because they simply don't perform well enough.