Wait-wait, I'm confused, do the scientists take a cut or not? I feel like we should reward 'em to keep them eager, don't you agree?
Of course they get their cut, they are getting crowd funded for their projects and when they actually deliver, they will get income from sales or selling their patent or some other way. So in the end of the day, they should benefit from this project.
I hope what these inventions and patents would be useful and as a result - profitable, humanity has changed greatly over the past 100 years of evolution through science and inventions.