@ct_bergstrom this reminds me of a fact my niece learned in business school: Costco makes shopping at their store time-consuming on purpose. They want to discourage customers from just popping in to pick up an item or two, because large shopping trips are more efficient and therefore more profitable. The time you spend waiting in line for a cashier at Costco is built in by design.
EDIT: As per @kyozou, the part about waiting in line is wrong. Thank you for the correction!
@jik Wow. Do you know if this is written up anywhere? It's a fascinating example.