Some.

1) it was never seen as a problem because the erlang team believe (and i agree with them) that you best let specialists deal with their speciality are.

2) There were never an efficient JIT on the BEAM. This is something that is regularly looked at by the OTP team, but it would be a massive effort, just to try to approach effiency of what other language, that you can easily interact with, could do.

3) The use case are small. Let be honest. The amount of problems that are really only CPU bounded are limited in day to day work.