Erlang solved a lot of problems of scale in very effective ways. These new architectures are solving the same problems in ways that look similar from a distance. This new(ish) approach just means we can use existing software mostly unchanged, while still getting a lot of the resiliency benefits of something like Erlang; doing it with Erlang means everything has to be written in Erlang. That wouldn't be a crazy idea for some deployments. But, for others, it's not tenable.
Erlang's support for C modules was always good, though. PyPy, Swift and Rust do all seem to have a fairly good export-to-C story. With Clang modules something like Erlang could become the "cloud shell".
