I've been toying with the idea of getting a hitch installed on my Prius.
Here are much smaller (10x and smaller) taxes on vehicles, that is probably the reason.
I also doubt you are taking fuel into account with this comparison, which was the primary source of savings mentioned when you own a small car and rent a truck as needed.
Large trailers (if they’re big enough to be worth hiring instead of a van) will for most people likely need additional qualifications on their licence to be allowed to drive with so they’re less popular.
Front-wheel driver cars in the United States are generally not rated for towing, and can void your warranty. (It's silly, because as I understand it, the exact same car in Europe usually is rated for towing).
Minivans are the exception; they are rated for towing more than some compact pickups. Unfortunately, seat design means that many minivans no longer meet one of the original design criteria of the first minivan: the ability to carry a 4x8 sheet of plywood.
That is crazy, no wonder many Americans think you need a monster-truck to tow a trailer. My small Audi A3 is rated with a trailer weight of 1400kg in Europe
I wasn't aware those laws were so strict in the US, perhaps that is why trucks are so much more common. Owning or renting a trailer isn't uncommon here.
I don't know about "most". Current Honda[0], Toyota[1], and Chrysler[2] vans are still up to the task.
[0] https://www.middletownhonda.com/honda-odyssey-cargo/
[1] https://www.toyoland.com/trucks/sienna.html
[2] https://www.boston.com/cars/news-and-reviews/2016/04/02/2017...
Always hated filling a sedan with trash, yard garbage, or landscaping materials though.
I used it to move a queen size bed, refrigerator, washing machine: stuff you'd normally need a ute or van to transport.