You are reaching on some parallels that can't be compared there. A heart surgeon can be more efficient than another and do more procedures in a given time to increase their income. They have reimbursement to their facility based on outcomes which is directly related to their performance. They can be given more surgical blocks than another due to their performance increasing their income.
A heart surgeon’s efficiency has nothing to do with tipping because his efficiency is largely irrelevant to his customers. What they care about is his QUALITY. I strongly suspect that a doctor’s attempt to see more patients as you describe would make his median patient less satisfied and likely make his quality worse.
Similarly in a restaurant under the theory of tipping you don’t care how many tables a waiter is serving, you care about their quality of service to you personally.
Since I’m both cases the thing we are trying to incentivize is the quality of service to the individual customer there’s no reason we shouldn’t tip our doctors or lawyers. In fact there’s little reason we shouldn’t tip almost every job. Doctors and lawyers would likely find this arrangement insulting though because as we all know, tipping isn’t actually about incentivizing good service, at least not primarily.
An hourly paid waiter can't work two jobs in the same hour to boost their income. They can't be rewarded for efficiency by waiting on more tables in a given hour to boost their income.
Oh come on. Even though efficiency isn’t the point of tipping a more efficient waiter could easily be given more tables to work in a section with more responsibility that pays better. You know, just like in every other job.
In some ways this already happens where the best servers are given the most desireable sections to work.
What I see happening is casual restaurants (that are often franchise) and are already under hourly wages for their staff getting a boost. Their prices are already baked in and won't change. True sit down restaurants that have to raise their already higher prices are going to see a downtick. Instead of a $15 sit down sandwich, it's going to be $18. Now compare that to a $9 sandwich at Panera or something and people will just start going to Panera more often.
The $15 sandwich is already $18 today, you just pay it in two parts and cheap people get to opt into a discount for no reason. If you eliminate tipping the $18 sandwich is still $18 but now the good tippers no longer subsidize the bad. Everyone wins except for freeloading bad tippers.