As a company they need to come up with the funding for themselves, release the rpoduct and if it's good enough it should make a profit. What they are doing ehre is asking for people to fund the game by buying before its even started to eb made. Unless I am misinterpreting it?
No publisher was interested (if you look at the pitch video from the Wasteland 2 kickstarter page, it comes pretty clear) - that's why they chose to attempt fanfunding. The whole point of the Kickstarter is to ask the fans of a particular product if they'd be willing have it funded (because it otherwise wouldn't) and participate (up to a degree - it's not a design commitee) in how the actual product ends up being.
In Double Fines case it was the fans of the classical point'n click adventure game (which all publishers rejected), in Wasteland 2's case it's the fans of the old school cRPG's (which all publishers rejected). And there's a multitude of other projects asking if there's an audience for such, from webcomics to cardgames to videogames to music etc.
If people aren't interested in getting such product, it will not be funded and the product will not be made. It's people funding what they want to see, a "focus group publishing", so to speak.
http://www.kickstarter.com/projects/inxile/wasteland-2