I was looking into getting a UPS for my server. Some UPSes do power conditioning, and all do AC/DC conversion. I got to wondering why I can't buy a UPS that out

I was looking into getting a UPS for my server. Some UPSes do power conditioning, and all do AC/DC conversion. I got to wondering why I can't buy a UPS that outputs DC and feed that directly into a silly looking PSU.