That is very expensive in most of Europe. Half Europeans don't buy new vehicles, they buy second hand, which makes owning way cheaper than renting.
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.