An analogy for this in the real world would be tips for waiters. As a foreigner, I'm aghast at the tipping culture in the US but more importantly, I fail to understand why tips are calculated on a percentage basis. It is no more effort to bring me out a $60 steak than it is to bring me a $5 coffee. So why should I tip $12 for the steak and $1 for the coffee? To Apple's point, they want a "fixed" tip charge. But then…
Throughput, expectation of service and number of tables/waiter are very different for coffeeshop/casual diner and place that sells $60 steak. In casual restaurant you can expect one waiter per 8 tables compared to 4 tables/waiter in fine dining place. People easily take 2x time to eat the same amount of food in fine dining place compared to something cheaper. In fine dining place waiters are better trained/educated (…
If I go to that same Denny's and order 4 Grand Slams, the waitress waits on the cooks, and then makes one trip to my table. They get a much higher tip for less work.