We use PW for the interaction with the browser, but really how we represent what to do is in a custom format (could be executed in other frameworks too). So the PW we could generate would be a subset, where the more interesting parts (custom functions) are not really implemented in PW.

Also part of our format is specially finding deterministic way of running steps, with automatic healing when failed. And we also build the whole system in a way that is self-hostable, so in the cases you mention you could be able to have control over what is run and where.