For better or worse I judge people mostly on how they they treat people with less power than themselves.
No. I’m paying for a service and they supply it at an agreed price. Same for restaurants. I’m already paying extra for the service and they should do it well.
the people actually doing the job often/mostly have no control at all over the “agreed price”. If I use a restaurant and it’s food is good, and the service is quick and the server happy, I’ll mostly tip pretty well, as I’m likely to go back. They’ll remember me as a good customer, and I’ll get good service, so I’ll tip well…and so it goes.