I mean, it's not like a colo doesn't have issues. At one point our colo was running some cable and we discovered that their cables to our rack were wiggly...after our stuff went offline intermittently. That was hard to track down.
And you need to set up the LOMs, the management network (hey, you don't want that on the public internet), VPN, serial cables (backup to network LOM), maybe a load balancer. And you have to hope that when you reboot the box it doesn't fail POST. And you have to remember to turn off power saving in the BIOS (how many people forget to do this?). And you have to set up the RAID 5/10.
And you have to do this sitting on the floor, because not a lot of places provide chairs in the racks. Oh, do you have a rack-mounted KVM/monitor/serial console or are you using your laptop with a serial cable to do all this?
I mean, it's not hard, it's just a lot of detail work. And I suspect that these skills are going away.