I am convinced that large-scale modern compute centers would be run very differently, with fewer or at least lesser problems, if they were treated as a single system rather than as a bunch of single-user computers ssh'ed together.
But history had other ideas.
IBM Watson is not that concept?
I think history (bussiness) tends right now to a decentralized model for large systems, which is not clear if it’s an advantage for now. Rather than emulating centralized computing systems across many machines. Anyway, the main interest for researching about is still keeping the bussiness running. And for now Unix descendants do it really well.