Most people don't want to repair, they want to replace. What people really want is a modular computer, the way things used to be. Right to repair is going to force legislation for schematics, at best. Even then I don't think it's going to happen. Like it or not, Apple builds integrated products now. You are the old man grumbling about the iMac not including a floppy drive.
I'm not complaining; I generally agree with you. But (I believe) for people to invest in Macs for servers they need to be able to fix and replace them faster than dealing with Apple would allow.
Honestly CPUs and memory fail very rarely. If the storage was on standard m.2 sticks and maybe the I/O was on a replaceable module in case Ethernet fails… would that be enough to assuage most server concerns?
I don’t see Apple getting back into that business. But I think they have the ability to make a good option if they want.
Given the hyperscalers' tendency to just leave failed machines in place in the rack because it's not worth the money to even swap it out, for specifically cloud type stuff the price point and density may be more relevant than the repairability.
