Thanks for giving so much more color. I'm only focusing on one specific argument, though. I am not ignoring what you are presenting but challenging an invalid

Thanks for giving so much more color. I'm only focusing on one specific argument, though. I am not ignoring what you are presenting but challenging an invalid claim on profit extraction. A courier service is extracting profits no more than a waiter or waitress is. Whether it's staff (waiter) or contractor (courier), both are providing "delivery" services in exchange for fees. A waiter offers internal delivery within the restaurant. A courier offers external delivery to the home. Counting the courier's myriad cuts and how it monetizes its services isn't revealing profit extraction. You're revealing how couriers are paid for their services (10% of the bill + market premium).