If these cultural differences are so strong, then surely a market that allows new construction in the U.S. will tend toward creating housing that meets those needs. If it doesn't, it's probably because people place more value on other things (e.g. proximity, price, etc).
The fact is that the market doesn't even get a chance to work itself out in the U.S. because cities encode a particular set of living preferences in law.
Absolute statements like that are just clearly not true. I've been to Japanese friends' apartments, even visited friends' family barbecue or wine tasting night.
Less common doesn't mean it never happens.
Probably because most of my friends in Vancouver live in sharehouses or basement suites where they aren't allowed to have guests by their landlord, while my friends in Japan had small but respectable spaces that they had much more permissive ownership of.
My parents lived in japan and I have a few friends there. I spoke with a friend who works in graphic design on the outskirts of Tokyo who doesn’t even own a fridge - all his meals are eaten outside of his home.