If the US consumer just one day got on the same page and quit tipping en masse what is the net effect?
One day? Nothing. But let's say all Americans decide they are over ALL tipping.
Most servers would take a pay cut, and more would migrate from the job. There would be a lot more real estate agents out there, bet on that.
Restaurants might change their model: order from your phone, runner brings it. Three people working front of house, 100 seat restaurant. You have a question about the menu? Google it, beeyotch.
They already have these food halls set up, they make sense.
The high end restaurants would be interesting. That staff can/should make 6 figures. Do those places raise salaries? I dunno, but not worried about that. The 1% restaurants have found out they literally cannot charge too much, so they can adjust whatever they need