If Chris Roberts, with his name and reputation in the games industry, were still capable of making quality games, wouldn't he have been able to find a publisher to fund Star Citizen instead of having to beg thousands of his fans?
My attitude towards crowdfunding is to never contribute. If the product's successful, I can just buy it off-the-shelf when it's finished. (Like the new Elite, for example.) If it fails, I'm not out anything. (Sure, there's a small chance I might miss out on some Kickstarter exclusive deal, but I'd rather miss out on that then have an Ouya collecting dust in my living room.)