Doing folders in steels like 3V will never be a common thing. Production companies take their reputations into their hands with every knife that comes out in this day and age of the internet. When someone breaks a knife, or does something to it it's on the forums whithin hours and it goes something like this:
I broke this knife
another guy: mine rusted.
someone else : I can't get mine sharp
expert: It must be the heat treat. I hear spyderco has trouble with heat treats, unlike ( insert this guys favorite brand)....
So, next thing you know from now until forever there are people that are convinced that spyderco produced a batch of 3V knives that were defective, prone to rusting and chipping because the heat treat was off.
The fact that the guy that broke it was doing something he shouldn't to his knife won't enter into it. The guy who rusted his perfectly good knife just didn't care for it the way he should have. The other guy just doesn't know how to sharpen knives.
It happens all the time. When anyone tries to point out the facts it's just the "kool aid drinking", "Fan boy", " spyderco vigilanties" going into attack mode as usual.
We do see occasional runs of knives in other than stainless steels occasionally and that's the companies like Spyderco and Benchmade trying to satisfy their knowledgeable user base, not to sell to guys who don't know what they are getting.
We may see a 3V run of knives from some company in the future as a lot of people call for it, but don't hold your breath on when. In the mean time there are plenty of fine stainless steels, stainless super steels, and almost stainless steels ( D2).
When you do see a run in M4, or maybe someday 3V, grab it up and be amazed the companies made it.
There are custom makers who will do it for you if you have the money and don't mind waiting. That's probably your best bet for now.
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...Please tell me more about Busse's "beer can alloy" knife steel. 
