If you want more insight into all of the things that normally run on "PC architecture" - the 2.5 other kernels/operating systems running underneath the one you think you're running - https://www.youtube.com/watch?v=mUTx61t443A
With apologies to everyone who has a "The cloud is someone else's computer" T-shirt, things have changed, and the language as evolved as it is wont to do.
I've spent the last decade building on-premises systems very like what Oxide is doing, but I've had to build them out of stacks of servers, switches, storage appliances and VMWare licenses. And the network cabling, and fan noise, and the number of power cables, and.. oh man, I can't wait to install one of these things myself. Having a single point of responsibility for the whole thing shouldn't be underestimated either - I've spent far too long trying to resolve problems with vendors on both sides blaming each other.
It's worth mentioning too that building something equivalent to this would be across more than one rack, and easily cost in excess of $1M.
If you compare an 0xide rack with a standard combo of Dl380s, Nexus switches, netapp filers and Vmware licences, and look at the specs page - “ 1024TB of raw storage in NVMe” - there’s no way this is tens of thousands and I’d be a bit surprised if it was in the hundreds either.