[Jagerbizzle]

Ironically I think the original Facebook messaging did something similar, but they changed tech due to their inability to hire developers competent in the language.

[bmitc]

So they hired "smart" people who couldn't learn Erlang, an easy language to learn?

[ramchip]

I don't think hiring was the issue. See these Quora posts: https://qr.ae/ps8h6J