> If a Rust rewrite of any of your software becomes available and you aren't installing it immediately and without reservation

This is silly.

Rust is awesome, and it's hard to argue against in many domains. However, software is more than the language it is written in or the runtime serving it. Is the Rust rewrite fully compatible? Is it supported by a strong community? Is it likely to continue to be supported? Is its release cadence sensible? Is its licence compatible with your intended usage?

There are many questions needing to be answered before making rash decisions based purely on tech.

None of those concerns approach the level of priority that must be assigned to security. On defense, your security must be perfect forever or you are absolutely defeated. None of us are on the red team. It's not a rash decision, it's the only decision that logic allows. If you are not secure, you are NOTHING.

I strongly disagree. The easiest way to shut down your business is to insist on being 100% secure because the only way to have perfect security is to do nothing.

Security is always about tradeoffs.