It makes sense that large corporations would be interested in Rust given its current capabilities and future potential.

Amazon, Huawei, Google, Microsoft, and Mozilla all have a vested interest in Rust succeeding since they are all deeply invested in high performance software, the majority of which is written in C and C++.

The undefined behavior semantics in C and C++ trade safe handling of undefined behavior for high performance. The result is high performance code that is difficult for developers to reason about and vulnerable from a security standpoint.

https://blog.regehr.org/archives/213 gives great insights into how undefined behavior in C and C++ can cause problems.

Rust is becoming an excellent replacement and hopefully will continue to succeed to enter all the niches that C and C++ currently occupy.