At some point I'd imagine hobbyist nodes with minimum specs aren't going to cut it anymore for some applications within this ecosystem--especially where DPOS is concerned. It's good to see at least some bare metal out there, but just because it can run on a set of hardware, doesn't mean it will run well.
I also shudder to think how much infrastructure is running on the same VPS service providers or on hardware that the operator can barely afford to maintain and lifecycle. You could drop a datacenter grade server in a colo facility where half a dozen ISPs meet, I'm talking redundancy, high availability, etc. At some level of growth you'd think these would become major considerations. I.E., it doesn't matter how popular you are as a node operator if your node has 1200ms latency to get to it, or your 5400RPM drives aren't quite cutting it anymore. It should be a huge consideration with DPOS, and I'm sure it will eventually be if it isn't already.