> I'm working with a few hundred backend engineers who all have a hard time with thinking infrastructure is always available and can handle infinite throughput.

Could you clarify this statement? Are you saying you work with hundreds of backend engineers:

- who all believe infra is always available and can handle infinite throughput (???)

or

- who can't wrap their head around an environment where infra is so scalable / high availability that it might as well be "infinite" and so they are always looking designing for tradeoffs that don't exist in your environment?

If the former, where do these people work? If the latter, where do these people work?