&quot;However, the memory safety is not a productivity improvement as more of a safety improvement.&quot;<p>I disagree. It frees you from chasing safety bugs and allows to invest more time in the features and that&#x27;s clearly productivity win. For example rust does not suffer from compiler bugs as much as compilers written in C&#x2F;C++ used to. Chrome and firefox developers spend a lot of time fixing buffer overflows and are likely to do this for many years to come. They certainly could do something more productive for everyone&#x27;s benefit.