Office was single threaded until 2007, companies with previous office licence wouldn't upgrade, but they had modern thinkcenter desktop with good dual core cpus yet their excel spreadsheet would choke on a single core all day long.
A good information system is almost an art, it requires proper knowledge from hardware, network config (<= most probable performance bottleneck for the users), software and end users.
Nobody does this because it's too subtle and not rewarding enough. But if someone did, any city could operate on "old" hardware using linux. I don't speak for the office suite because LibreOffice [1] is not good enough IMO. But for the rest it could be even better than recent win10 machines.
[1] I love their work, it's amazing but.. still not there yet, just like firefox and chrome.