Hospital doors have to be out numberer by the stools doctors scoot around on, I think.

1 office chair has 5 wheels. Almost every home has at least 1 office chair. And if we look at hospitals then it gets even worse because there are a lot of the beds have wheels.

And then we can go even further. A lot of curtains use rollers which are wheels. So if I just look at my apartment, I probably have 15-20 doors(cabinet doors, etc. but a lot of the normal doors are sliding doors which use wheels) and probably 50-100 wheels. And that is probably undercounting the wheels that are there by a lot.

Lego wheels vastly outnumber Lego doors though.

Lego is the biggest tire manufacturer in the world.

And inside those apartment complexes? Luggage, storage bins, drawers, IKEA daybed couches, modular tables, entertainment centers, desk chairs, and compact pizza-cutting utensils, all with one or more wheels.

Hell, some doors use wheels to close!

But so do lego 18 wheelers.

Also, wheelbarrows, roller skates, one wheels, scooters, trains and roller coasters....

Hospital carts, chairs, wheelchairs, medical equipment, pretty much everything has wheels.