Even if C++ is used less than before it won't die off and C++ experts can demand more money especially because there are fewer of them as most programmers move to more modern languages.
Yep, the same case. Only I read that those old COBOL programs are a huge mess of spaghetti code, so you are well paid, but you have to put up with ugly, hard to maintain code.
I'd rather work on something nicer for less money.