Rust may allow 100 engineers to work on the same codebase without spending all their time debugging memory corruption errors. I say "may" because I don't have firsthand experience in a team that big.
You have those two findings from Google and Microsoft that roughly 2/3 of the vulnerabilities that they find in their code are memory related, so it is definitely something that someone finds important. Also, if you have large scale codebase that is serving millions of people, the assurance of less bugs is much better starting proposition than maybe it won't fail.