I'm mildly interested in industrial-ready boards myself, but my industrial-ready means sitting outside in a hot and high-vibration environment doing signal processing. Everything I've heard about Erlang says it would be great at the networking part, but has no- or lousy- libraries for most number crunching applications.
You can make even an RPi survive harsher conditions with proper housing. Though it’s easier to work with the RPi compute module for that.
What kind of signal processing? The computational libraries are somewhat rough. Though the Elixir communities are slowly adding more libraries, like Matrex (https://github.com/versilov/matrex). It’s surprisingly easy to write C and Rust extensions.
You can include other C libraries (and whatever else you can manage to interface towards via Erlang's C driver interface) using NIFs (native implemented functions) and Erlang port drivers. This means it's entirely possible to use Erlang for the networking and coordination part and special code for the signal processing.
