I know protocol devs discuss this quite a bit. If you know enough about the protocols you can get the theoretical bounds pretty easily. Tadge Dryja touches on this some on this excellent podcast from chaincode: https://podcast.chaincode.com/2023/03/20/tadge-dryja.html ...

At some recent austin bit devs there was a transcript shared about core devs discussing "onboarding the world in a week to bitcoin." I'm struggling to find it.