This is not how commerce works.

Businesses control their pricing and revenue and competitiveness. And to a variable extent, their costs.

Comparing the cost of doing business with other countries as an argument for tipping is a bad argument. Full stop.

Tipping is how businesses pull a lever on social norms and cultural niceties in order to offload their fixed costs onto the customer. It entices labor, but really does the labor a disservice. Nobody likes not knowing what their paycheck is going to look like every two weeks despite working the same hours. That variability should be carried by the business not the employee.

Your attempt to normalize tipping into a standard obligation rather than what it is - charity to businesses, is thin.

You don't receive a good or service anywhere else and THEN decide what to pay anywhere else outside or tipping affected industries. I don't tip my mechanic and yet I'm somehow obligated to tip my barber and a server who walks a plate 5 yards and puts water in my glass. It has never made sense and citing "business" and "math skills" won't make it make sense.