> Not sure where the idea that software is released to production multiple times per ever came from.

UX-focused development. Your concern is mainly about user journeys, acquisition tunnels, etc. So you rely on user feedback a lot. So you ship, A/B test, iterate.

Also, if your service consists of lots of microservices, you don’t want to wait to ship them all at the same time.

The most fitting example to both is probably Netflix. I guess they ship to prod every day a lot.