ISTR one was basically just industrial office space that was running a lower-tier colo, and another was some guys in a metro area that got a rack in a data center and were spreading the cost around with other like-minded folks. At my work I have machines in an Iron Mountain facility, but for personal projects I don't need anything like that, but I'd like something that's more capable than AWS that I'm paying $80/mo for a couple VMs.