"Academia stopped teaching C++, moving to Java and then to Python." There are a lot more practical and lucrative skills for a young programmer to focus on than

"Academia stopped teaching C++, moving to Java and then to Python." There are a lot more practical and lucrative skills for a young programmer to focus on than C or C++. Many will be able to have good careers without going that low level. What impact will that have on the economics of legacy C/C++ code bases in the 15-30 year time frame?