I don't know why anyone who isn't a complete psycho would actually prefer being more limited in forward vision (though I imagine it allowed more space for dual-motor engines).
Honestly if I were the government, I'd require a downward sightline such that you can see, with your own two eyes, a child of a certain height standing against the front bumper. No visibility, no sales, no imports, no excuses. Let the car manufacturers figure out how to build a car that meets it or settle for "only" being able to sell car-shaped estate cars.
Same when I flew to Bilbao. I booked late, the only rentals left were in the luxury segment. I drove off in a mild-hybrid Lexus NX, where I struggled to fit the luggage that fit reasonably well in the boot of my car on the way to Schiphol.
I think the reason you don’t see many big cars is that we are generally so poor that we can’t afford what we would like to buy. At least where I live… Also our streets are old and narrow which makes it impractical.