A kick starter is more like a pre-purchase that uses the pre-purchase funds to create the product.
You don't become a share holder, part owner or anything at all like that.
That's a very, very dangerous assumption and one that is likely to foil the good faith of Kickstarter in time.
A closer example is that you become a stock share-holder with 0 shares, 0 ownership of the product and you earn 0 dividends from your stock buy.
This can still be useful, because guaranteeing nothing is sometimes all that a small time indie outfit that has no other recourse than Kickstarter can guarantee. You're not pre-ordering a product, or pre-purchasing a product. You're gambling that a product
might get made and doing so because the power structure that exists as it does won't take the risk for you, except that in this case you're guaranteed nothing out of it, unlike a traditional producer who might get rights to the IP or what not.
If you believe in the product enough to make that gamble, more power to you. I've been a part of several kickstarter projects myself. But that's all it really is.
But believing Kickstarter is a pre-purchase is troublesome for 2 reasons: One, it will create resentment if and when (and the more kickstarters are started, the less 'if' it becomes and the more 'when' it becomes) a highly paid project folds up. Producers have many ways to alleviate losses in this scenario, but you have none. When you presume that you do or that your money is going towards some future game that the makers only have to 'discover' already built buried inside the marble, so to speak, then you're setting yourself and the Kickstarter community up for an eventual and very rough fall.
Two, it allows people with means that don't require Kickstarter to function and traditionally have done business fine without it to abuse the Kickstarter model, and thus abuse you, by allowing them to forgo normal channels of fundraising and ensuring capital for ventures and to bypass paying stock holders money by tricking you into basically becoming their venture capital source by tricking you on the nature of Kickstarter.
So please, don't tell people they're pre-ordering a product when they use a Kickstarter. The system can be a lot of good for a lot of talented people that exist outside of the traditional publishing system, but you do it no favors in making promises with the system that can't and won't always be kept.