Yes but at some point there will be a position such as 'senior doctor of whatever' and having a medical licence would be taken as a given, and yet there will be

Yes but at some point there will be a position such as 'senior doctor of whatever' and having a medical licence would be taken as a given, and yet there will be some competition for that place. I don't know really if these discussions are around hiring for your average SE role or something more specific though.