None of that transparency is done at the OS level today though, it is done in layers above that, and that's not some new thing that's just started now. It's obv

None of that transparency is done at the OS level today though, it is done in layers above that, and that's not some new thing that's just started now. It's obvious that's the way to go and trying to shoehorn some over engineered network transparency into a kernel never had any real justification or demand for it. It's not like Plan 9 was new with distributed systems or concepts or network transparency. You had many distributed systems, MOSIX, VMS, X11, NFS, etc all a decade or more before Plan 9. For the most part they were an academic obsession that's has mostly run out of steam these days replaced with local operating systems and layers on top of those which add the distributed support.