So where does it stop? Should software developers expect a tip if someone uses their service? Does it matter how mich money they make? I bet some restauranteurs

So where does it stop? Should software developers expect a tip if someone uses their service? Does it matter how mich money they make? I bet some restauranteurs make so much that they can pass some down to their employees. I am completely against tipping unless the service is exceptional. If restaurants in Europe can afford to pay their employees living wages, it should be possible here as well.