I think what happened is that the developers that figuratively jumped up and down screaming about compile times all shifted towards interpreted languages.

JS has been able to do roughly what C did in the 1990's, in terms of raw performance, for some time now. The folks that need typechecking can pick up Typescript or Haxe or whatever else is attractive.

It's the bottom of the stack that really suffers - all the folks that want to work on stuff touching I/O and low level resources directly - and that is hardest to justify investing in. Unix and its baggage remain "untouchable", as these things go, and there are only some hints of promising developments otherwise.