I wonder how much the roots of erlang is showing now? Telephone calls had a very specific "natural" profile. High but bounded concurrency (number of persons alive), long process lifetime (1 min - hours), few state changes/messages per process (I know nothing of the actual protocol). I could imagine that the agentic scenario matches this somewhat where other scenarios, eg HFT, would be have a totally different profile making beam a bad choice. But then again, that's just the typical right-tool-for-the-job challenge.