I have backed several things on Kickstarter including one brewery. http://bricksidebrewery.com/
Brickside in Copper Harbor did a Kickstarter campaign to make that last push over the goal line. I chose to back his project because much of the funding was already secure and things were progressing. My contribution helped get the owner over that final hurdle and on to making beer.
I have backed a couple of product kickstarter projects that basically needed the funds to get a first production run done. In those cases the development and prototyping was already completed but the company needed the funds to get a manufacturer to build the product.