The real reasons:
- Small studio that people don't know about yet, and don't have experience with (uncertainty factor).
- Publisher is still unknown (there are lots of bad publishers out there so people are being careful).
- Not too much concrete game play has been presented yet (Mostly only theoretical info, artwork, and the basic game play. People need to see more developed game play to get a feel if they will like the game or not.).
Fixes:
- More promotion of the studio and developers themself (not only game promotion), it will help if people get to know the devs as well (the people behind the game) and not only the game.
- Announcing a publisher (that players have good past experience with) would help immensely.
- More development time invested into the game so more can be shown (time is needed here, there is no quick fix for this one).