Two things that are very wrong with this: 1. WhatsApp is dependant on cellular infrastructure which you count into your 10k engineers. 2. "Erlang was designed

Two things that are very wrong with this: 1. WhatsApp is dependant on cellular infrastructure which you count into your 10k engineers. 2. "Erlang was designed with the aim of improving the development of telephony applications."[1] So it powers/powered a large part of the cellular infrastructure. [1] https://en.wikipedia.org/wiki/Erlang_(programming_language) https://en.wikipedia.org/wiki/Erlang_(programming_language)