That was confusing and badly written ("This was not the first time I get entrepreneurial ideas.") so I've read it several times and I still can't figure out what he's on about.

Is his idea that somebody might want to pay to use his three-CPU, inhomogeneous, linked-by-ethernet cluster of useless old machines?

Or does he want to expand it to a bigger inhomogeneous cluster of useless old machines, until he figures out that he's going to need a much bigger air conditioner (somewhere around the 16 CPU mark)?