I wonder why C programmers make so much compared to other developers. Prbably because they are experts in some very specific domain and they happen to need C to

I wonder why C programmers make so much compared to other developers. Prbably because they are experts in some very specific domain and they happen to need C to fulfil their needs; they're really network stack developers, cryptohgraphy developers, compiler developers etc. So simply learning C wouldn't get you those salaries, both the fact that they use C and that they earn that much in comparison are the consequences of them being experts. Another example of correlation not being causation.