Remember just as there are extremes of cons, there are extremes of pros.

The question is that is the average case worth the cons? Is the investment going to work out where they are held liable if they fail to deliver anything within x time? How can we dictate what is valuable and not deliveries.

With investors you know who you answer to. Here... not really. The risk is sort of both ways, but one of the two has been eliminated with the donation model.