CHERI is undeniably on the rise. Adapting existing code generally only requires rewriting less than 1% of the codebase. It offers speedups for existing as well as new languages (designed with the hardware in mind). I expect to see it everywhere in about a decade.
We’re all using the pointer math functions in Rust and testing it with miri, right? Right?
There's a big 0->1 jump required for it to actually be used by 99% of consumers -- x86 and ARM have to both make a pretty fundamental shift. Do you see that happening? I don't, really.