I think it's a little more nuanced than that. Java was fast enough combined with security and safety guarantees to make it worth it in a total calculation. But

I think it's a little more nuanced than that. Java was fast enough combined with security and safety guarantees to make it worth it in a total calculation. But Go and Rust are both faster with at least as good if not better safety guarantees so you are seeing a move away. Language choice is never wholly about speed. Java filled a niche of fast enough with certain guarantees and affordances to allow it to fill certain roles. C++ has gained a lot of affordances as well to improves safety as long as your can enforce their usage in the product so it's starting to eat into Java's market share as well. But I think long term Rust and Go will absorb more of what you would have done in Java than C++ will.