There's no reason why the customer should bear that burden rather than the owner. The owner can figure out how to implement a profit sharing/incentivization scheme just like every other business! If I work at an Apple store and we sell 5,000 iPhones in a day and still make the same hourly wage, should I be mad at the customers for not tipping?
I think a "profit sharing" system for a restaurant would be pretty complicated. Plus tipping to me is somewhat like a price discrimination system. Cheap skates don't tip or pay the minimum, people that can afford tip more, drunks tip the most. So the same service is being provided at different prices. If you throw that out the window, you might never get those dollars back.
