If by 'general purpose PL' you mean one used to write mainstream GUI apps, I nearly agree though I'd bet against Rust on that score. If however you mean one us

If by 'general purpose PL' you mean one used to write mainstream GUI apps, I nearly agree though I'd bet against Rust on that score. If however you mean one used across a wide variety of industries, software types, and hardware, I think its future is already assured there. My own guess is that Rust will become quite ubiquitous for the performant and stable core of many software systems, with the interactive levels handled by other languages.