Hauling "hundreds of pounds of supplies every single day" is a fringe use case, essentialy nobody does this, it's not relevant.

"Maybe you don't understand people's needs and motivations as much as you think you do."

It's the opposite. You're confusing "needs" with "wants" and extrapolating the needs of the very, very few people who genuinely need a truck onto the entire population.

The vast majority of people use their cars to transport only themselves to work each day, then maybe pick/drop off one more person, then maybe go buy groceries.

I don't think you quite understand just how ridiculously niche valid use cases for trucks are. It's literally just towing, or some very specific off-road hauling. Everything else is going to be handled way better by something else, starting with a regular car, ending with a van.

Hell, for most people even a car is way overkill, a bike works perfectly fine to go to work each day, I assure you. So does public transport. You don't need 2 tons of steel just to to move your 100 kg body around.

To your analogy, I can use my dinky little chromebook 99% of the time and only boot up my PC when I actually need the power.