No, it wouldn't have. There have been developers that went out of business this generation after selling 3 million copies of a game.
Cursed Mountain was simply too low profile a release, thrown into the horrible atmosphere other third parties created for all of them on the Wii with their shovelware antics, and not advertised or marketed in the least outside of maybe a banner ad.
Which is a shame, because I hear it's pretty good. One thing to note is that Deep Silver, the publisher itself, is still alive and squarely a PC developer with some ports. I wonder if the "internal struggles" cited were the result of the bigger publisher simply not caring about the Cursed Mountain project to begin with, essentially leaving this multi-year project out in the cold.
And please, no more comments on what "can" and "can't" sell on the Wii. RE4 is just like Cursed Mountain and it's a Million seller so...