I have no plans to adopt Python beyond OS scripting tasks, even in the context of AI, other ecosystems are starting to have bindings to the same C++ libraries.
As for Rust, I don't have a use case at work where it is a win over managed compiled languages, maybe if Vercel finally offers first class support for it, instead of the community runtime or via WebAssembly.
So maybe it is a new trifecta for some users, not all of us.
EDIT: Additionally, I think AI will make current languages largely irrelevant, as they increasingly get better at code generation.