We prefer paying proper price for the meals with all costs included, to see those prices upfront, knowing that workers are paid fairly already and they just do the job expected from them. It means they can have decent lives regardless of their physical attraction, race, if they are sick or any other reason disadvantaging them compared to others. It also means I don't need to ever worry if waiter spit in my burger just because I look like somebody who won't tip enough.

Do you also tip every single time bus driver, colleague, bureaucrat handling your request or your child because they did their work as expected? Because why stop at some imaginary border.

I think everybody (except maybe some unethical employers) want to see employees paid a fair and livable wage for their work.

Everybody has different ways of expressing gratitude. That bus driver may be well paid and just doing their job, but I'm still grateful they are doing it and will thank them as I get off the bus.