I think the problem is a bit more complex than that. Anyone with an idea that actually has real market potential is probably going to want more than 10% of the

I think the problem is a bit more complex than that. Anyone with an idea that actually has real market potential is probably going to want more than 10% of the profit. And with Kickstarter/Indiegogo generating millions of dollars in idea funding, it's a lot easier these days to build a product yourself. In order for this kind of platform to work financially, you would probably have to alter the model so that 1) inventors can get out of it as much as they put in, 2) it only promotes products that can actually make it in the market at a realistic price, and 3) it doesn't depend on a black box of expensive engineers and product people. Something more like a rapid fab company to prototype possible products and vet them with the community, probably integrated with a crowd interest platform like Kickstarter.