My view for what it is worth.
First as I said before, there is a huge difference between a vote and a contribution. If you made a poll on would you contribute to a crowdfunded module far less than the 85 current others had voted yes. And a poll for how much you would contribute would not say 75 $, but far less. I am not at all negative to crowdfunding, but I am realist-
Lets take the ES module. Looking at PS there is one free and one paid module. In my book that means that the demand is low, because if it was high, many more developers would have one for sale So how many of the 43 voters for that module could think of paying 75$ for it?
The first project will perhaps give an answer, we will have to see