In the grand scheme of things, the customer may have slightly more pull than the cashier ringing up their order, but it’s the CEO and the board of directors that control the narrative. That’s why we’re getting bigger and less fuel efficient vehicles, bigger and more fattening meal portions in restaurants, and bigger less affordable houses.
I don’t understand how a “rude customer” is related to “most people buy big cars.” Also, the customer is always right is an American thing, that may explain why I’m confused.
Last but not least, I bought the smallest car available because I wanted this. Most people buy big cars because they are influenced by the things around them, it doesn’t mean that they are rude to the cashiers.