I'm not sure I have anything to add.
Queen makes most of their knives in D2 and their Schatt and Morgan File & Wire series is in ATS-34.
Don't get me wrong, I love to try different alloys, but as a couple of others have said, blade geometry is more important than the alloy. I have a GEC in 440C that, if measured by cutting effort, will outcut most knives in S30V.
Cost is also a valid reason. Traditional knives are much more complex than most one-handers. Making them out of a steel that is more difficult to process will certainly drive up the cost.
Aside from geometry, a nice piece of 1095 or 420HC will get razor sharp with very little effort using almost any medium. And it will hold that edge well enough to do quite a bit of cutting.
But to me, at the heart of the matter is "what camp are you in when it comes to good EDC steel?"
Having done a bunch of reading, it seems to me there's more or less two camps as far as EDC steels.
- High wear resistance, but not as sharp - There's your S30V, 440C, 154CM et al. camp (great for skinning or extended cutting)
- Very fine grained that gets razor edged - There's your 1095, 13C26, 420HC, AUS6 camp. (great for having a very fine edge at the ready with minimal work.)
These camps apply to one-handers as much as traditionals. Kershaw uses 13C26 and 14C28N, neither of which has much abrasion resistance but gets razor sharp. And there's a fair number of folks who like Kershaw knives. (me among them.)
Howsoever, we were talking about traditionals. For the most part, folks who like traditionals seem to be in the razor group. Most of us like a steel that is easy to get a really really fine edge on the blade, the kind of edge our fathers and grandfathers used. It's kind of part of the traditonal feel.
But, on the other hand, if you really really feel the need for a "high end" uber steel, you could buy a custom.