My first job out of college I ended up with the absolutely slowest box in the office, which definitely pushed me toward optimizing our app (it wasn't even good on fast machines, but it was tragic on slow), but compile times were murder.
We had a Sparcstation somewhere in the office being used as a mail server and nothing else. I don't recall how but I managed to SMB or NFS mount a directory so that I could edit code on my piddly little desktop but compile it on the Sparc. First time Java really worked as advertised for me.
Saved me loads of time and let me iterate on ideas that I don't think I or my boss would have had the patience for otherwise.
I'm not entirely keen on language servers, but those would be another area where distributed computing could come in handy. I think what might be missing though is a multitenant version. Everyone on my team has a duplicate model of our dependencies loaded into Webstorm and it's a pig.