How the hell are current markups unsustainable? I don't know how many deliveries the average driver does in a day but it can't be more than a few bucks worth of

How the hell are current markups unsustainable? I don't know how many deliveries the average driver does in a day but it can't be more than a few bucks worth of their time. Yet somehow my receipts are marked up 30-50%, in a myriad of different ways: service fees, convenience fees, invisible markups on menu items... Convenience is not worth that much to me. I really wish it wasn't worth so much to others