I can see your point, but the problem is that for every experienced aquarist who takes an informed gamble on keeping one of these fish, there are probably going to be dozens if not hundreds more who buy them, kill them through ignorance or bad husbandry, and then simply go out and replace them without ever learning anything from their mistakes.
I'm not against experimentation by *experienced* and responsible aquarists. I'm dead set against treating animals like they're a disposable (and infinitely renewable) resource, and IMO, selling delicate species with low captive survival rates to any old body who can afford them is doing exactly that.