Because it's still in development, when it does come out, throw as much money at your screen as possible and hope this game stays alive for 20 years or so.
I hope so as well, and i hope they do create a fine game to boot worthy of the warhammer 40k universe.
Indeed, I would probably spend hours on this game, if it turns out to be everything the devs said it would be in the interviews and the FAQ.
I've already done that, right now I'm aiming to read every Warhammer 40k book ever written! So far I've read about 15? I've still reading "Legion of the damned"