Original link: Programming Language Migration 2025: Why Developers Switch / JetBrains.
I think the most interesting is what language developers switch from and to.
C developers switch to Java, Python and C++. C++ is pretty obvious, but Java and Python indicate a pretty big change - either from system close programming to business application programming or from decades old business application to modern business application.
C++ developers switch to Python. Very different language but if a C++ person has to do some data analysis then Python is obvious.
Go developers switch to Java. On the surface very surprising - from new to old, but may make sense to switch from something simple to something heavier if the requirements has become more complex.
JavaScript developers switch to TypeScript and Python. No Surprise.
Rust developers switch to Go or Java. Somewhat surprising as Rust developers usually very loudly prefer Rust over both Go and Java, but I guess they got hit with a productivity demand.