C++ doesn't need a point. C++ is a mature language with mature tooling, an installed base of tens or hundreds of billions of lines of code, millions of professionals worldwide getting critical work done every day, with guaranteed prospects decades into the future. You personally depend on C++ code not crashing hundreds or thousands of times every day, without knowing it.

In some possible futures, Rust code may take up just a bit of the load. The most value would come from its displacing C and Java in new projects.