Exactly what has kept me out of the loop
In my case, if I had a few thousand to build the prototype, I'd also have the rest of the plans development money (which would be in the hundreds) and wouldn't need Kickstarter. Sort of the same ol' same ol' -- in order to get money one must have money.
That's also assuming my project can be built in that manner, with 3-D printer, etc., which it can't. It uses readily available off-the-shelf new or used components configured in a unique way. One of the main components can be bought new for a couple hundred dollars or used for about fifty, but if purpose-built by a machine shop, would cost five thousand. This is just one component of roughly six that this concept utilizes.