Can you be a little more specific about the scope of who "you" is? Startups, small businesses, freelancers, etc. I can answer this question, but I'm not sure I'd be polluting your data or not.
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.
My company maintains no hardware (everything is "in the cloud"). No server grade stuff or gaming rigs here - I did a purge of some desktop PCs over the summer.
The closest thing I have is an xbox 360 in a closet. I've got a 4 year old macbook pro in a drawer that I keep as a cold spare, a 3 year old macbook air that gets used about 4 hours a month, and a 2 month old macbook pro that is my bread-and-butter machine.
However, I do know people with basements full of hardware.
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.