C and C++ will very likely still be "mainstream" 30 years from now. Essentially every important piece of software today, from operating systems to programming

C and C++ will very likely still be "mainstream" 30 years from now. Essentially every important piece of software today, from operating systems to programming language implementations to server software to applications, is written in one or both of them. All of these systems are not just going to go away. C is over 40 years old, and C++ around 30, yet in that time nothing has come along that can compete with them. Some other languages have tried, but their success has only ever been partial, and typically in just one or two specific domains.