Imagine a recent college graduate going to a car dealership, asking to buy the cheapest luxury car on the lot. It'd be reasonable for a salesperson to ask whether a more economical choice with better gas mileage might be a better fit. But, the question is dismissed as irrelevant because the customer says all of his/her friends purchased luxury cars.
Similarly, when a consumer asks to buy a top of the line computer, intended for professional power users, it's reasonable for a salesperson to ask whether the computer is going to be used for more than checking email, word processing, and watching Netflix because most ordinary tasks require minimal computing power.
In other words, customers are asking to buy heavy duty trucks when compact cars would suffice and then complain about poor gas mileage and having difficulty finding parking spots.