>> Kickstarter is a platform where people invest in future of some geeks
And then those same backers complain loudly when those geeks succeed at business. Oculus just sold, before launching a product, for a quarter of the value of Electronic Arts (revenue: $3.7B). Perhaps Oculus (the business) was too successful for its backers, but there's not a lot of teams that would have turned down a deal like this.
Nitpick: If EA's revenues are $3.7B, their value is much more than that.
Generally you could look at market cap, or derive the present value of future expected cash flows (meaning how much would you have to invest today in order to receive $3.7B in interest payments annually).
And then those same backers complain loudly when those geeks succeed at business. Oculus just sold, before launching a product, for a quarter of the value of Electronic Arts (revenue: $3.7B). Perhaps Oculus (the business) was too successful for its backers, but there's not a lot of teams that would have turned down a deal like this.