Very true, and a good point, but games inevitably end up being what the players make them. TONS of people wil buy it just because it is the next Diablo. Hell, over 1 mil will be getting it for free thanks to the Annual pass. There isn't really anything to compare it too because no one has really done this before. The only thing I can compare it to is a buddy of mine made a bunch of clothes and outfits on IMVU, and makes about $250 a month off of it, and he hasn't made anything new in over a year. still rakes in a nice little check every month.
I will say this though. I look at Super Smash Bros. A game that was NEVER intended for competitive play, and still to this day isn't, but people play that game like it's starcraft. Even the developers have basically said "wtf are you guys doing. This is supposed to be a party game." Not many people play EVE either, but people drop cash in that all the time! It's a crazy concept that I am Chompin at the bit to watch play out.