I'm actually curious about anyone/everyone. My supposition is that there is a lot of dormant compute out there, and all of it is useful, although for different purposes. The biggest problem is that it's all locked up with no way of connecting it to a useful workload. It just seems like a colossal waste.
My guess is there is a lot of people with desktop/gaming machines which are powered off 20+ hours of the day. For startups/freelancers, I know I've got three or four machines which are powered off not doing anything other than depreciating.