I think the obvious answer is there's not much demand, and keeping it "low" allows trickery and funny business with the virtualization layer (think: SAN, etc) that you can't do with "raw hardware speed".
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So there is demand, but I'm certainly not interested in paying many multiples of 50 euros over an expected lifespan of a few years, so it may not make economic sense for them to offer it to users like me at least. On the other hand, for the couple hours this should have taken (rather than the days it initially did), I'd certainly have been willing to pay that cloud premium and that's why I tried to get me one of these allegedly SSD-backed VPSes... but now that I have a fast system permanently, I don't think that was a wise decision of past me