Keep in mind that Graydon mainly think in term of low level compilers, system level languages and software you ship to your users' computer. Not a language that

Keep in mind that Graydon mainly think in term of low level compilers, system level languages and software you ship to your users' computer. Not a language that live on your servers and provide a service through the network, nor distributed systems. In that case, a model ala Erlang may totally make sense, but create a quite high overhead in term of runtime, deployment and impedance mismatch with the rest of the ecosystem. There are use cases of course, and there are interesting possible solutions like Pony that appears slowly, but we still do not have a good solution around that. For a pure "server" and "distributed systems" or "machine dedicated to your software", you are right in my opinion. Add on top of that that erlang know its limits and provide you with way to easily interact with languages with different paradigms. It may make sense to keep these different paradigms isolated but easy to talk between them and exchange.