You're high. In industry C and C++ are very widespread. Go and Rust are ... not. You'll have an easier time finding a job that requires FORTRAN than one requiring Rust, and Go is only a bit more popular.
Consider that the number of programmers adopting C++ every day far, far exceeds the number adopting Rust, and the rate is increasing faster, in absolute numbers, than ever before, it is hard to imagine any scenario where C++ is less popular, relative to Rust, than today. Yes, C++ usage will less than double, while Rust usage will multiply, but the absolute difference in number will be much larger than today.
Touch base in 5 years... Rust will still be a niche language due to its complexity. (IMO, Go has a better chance of at least picking up a few percentage points.)