I had an idea for a business. Start up with as many nodes as you can purchase, preferable something along the lines of 20-100 basic computers, necessary networking hardware, whatever software is needed, to start a sort of a render farm business, where you'd rent computer time to, say, animation and graphics students who needed to render 3d graphics but don't have access to a good render farm, places that need number processing or distributed computing on a small scale, etc. As you make money, add more nodes as you can afford them, upgrading as necessary (then again, render farms don't really need the best hardware, do they?), advertising...
Is this at all a feasible idea? Likely to make any money? It would certainly require an investment to begin with, probably a small business loan to get the startup hardware and usable premises, but would it be worth it?