I wouldn’t worry too much about the food servers in restaurants who serve multiple customers per hour and get mandatory tips from large parties.
What needs to be addressed is the fact that pizza delivery drivers make less than minimum wage, generally serve one customer at a time, incur the unpaid expenses of additional cost of insurance, double what others pay if they can even get insured properly at all, spend more than twice as much on tires, oil changes, and tons more on car maintenance, and if gasoline goes up in price the amount they get paid for the gasoline stays the same. And half of all customers (or more) do not tip anything at all, and some think the delivery fee (which pays gasoline only) is the driver’s tip.
I’ve stated this several times before, but here it is again. Food servers in restaurants get tipped more and don’t have those additional expenses, and serve more customers at one time.
NETA: Well, it needs to be addressed if you folks want pizzas to be delivered to your house in a timely fashion. Otherwise you can keep getting part time teenagers with no work ethic delivering your food slowly because they have no incentive whatsoever to get it to you quickly. More trips per hour but no tips means the driver actually loses money on every run.