But if the world (U.S.) suddenly went "no tipping", it would be the result of the restaurants paying servers a full wage, like they do in Europe. That would mean you paying higher prices. Restaurants have razor thin margins already; there's no room for adding extra cost; they'd have to raise their prices.
In that case, there is an indirect, but 'mandatory/service charge' built into the bill. You'd be paying the same total amount but it would be inclusive and not broken down into two steps. Right?
In essence it doesn't matter if you tip or if the server's cost is built in, you'd be paying the same. There's no free lunch here.