entitlement....they aren't working for me, they are serving me a meal at the behest of their employer...they work for him.
I almost always tip at a restaurant, never tipped my barber (his shop) now tip the gal who cuts my hair....she works in a salon. I never tip my mechanic and in 30 years in the garage business, never recieved a tip. I don't tip lawn care people, cleaners, retail sales people, most of whom work for others. Each occupation has its expectations and a person employed should perform to the best of his ability for his employer and therefore job security.
That's fine. He can pay them so you won't have to. Enjoy the impact on the menu prices. You mention that you almost always tip at a restaurant. I'm not saying you should tip well or even at all for bad service. To expect a tip for bad service is entitlement. That is certainly not what most people here are saying.
But the convention is that wait staff makes their money on tips. That in itself is incentive for them to do well, though like people on straight commission, it is no guarantee they will make the sale. But this is one convention that probably won't be changing for a while. To ignore that reality is entitlement as well.