Not sure if the economics of it are as simple as the author suggests. Espresso-based drinks take time to prepare, and while people are willing to wait, there i

Not sure if the economics of it are as simple as the author suggests. Espresso-based drinks take time to prepare, and while people are willing to wait, there is still a limited number of them that can be made per unit of time. On the other hand the number of drip coffees that can be produced per hour is much much higher, so even if the absolute profit per drink is lower they could easily sell more of them.