Not really surprising
So a stripped-out OCP node is cheaper than an HP midrange server.
How about comparing it to an equivalent white-boxed server, that would be a better comparison.
Open Compute has generally been a playground for super-large, cloud-scale service providers to play in. Unless you’ve got a data centre the size of a footy field, the general consensus has been that it isn’t for the likes of you. As it gradually gains traction among non-cloud service providers, though, there’s a question to …
"the conventional standard for data centre racks, which date all the way back to telephone switching equipment."
It actually goes back even further. Originally the requirement was for control units used with torpedoes (which still come come in 19" and 21" sizes today). The same electronics were later used for switching systems.