Let's focus on things that don't dedicate us to a tip-based economy.

To my knowledge, the only change to tips we need is that if your tips are put into a pool to be spread amongst the staff, which is a common practice in restaurants so that the chefs and dishwashers get tips, then the owner can't include themself in the people to get paid from that pool.

I dated a girl for a while in Ottawa where the owner was taking a huge cut of her tips that way.