In lots of the US it's illegal for developers to propose anything other than Single-Family Homes. They are codified to have large minimum size requirements and often have setback requirements forcing the house to be a certain feet away from the street. Businesses are legally required to be segregated from residential used, even corner stores. Lots of businesses in the US are zoned to mandate a minimum amount of parking.
The justification for a lot of these zoning laws is explicitly that developers and the market will not provide adequate home sizes or parking, so minimum requirements are forced on developers. When law forces huge houses, no mixed use, and huge minimum parking lots, the only built environment that emerges is a car dependent one. Older US suburban neighborhoods, like the post-WWII suburbs, had smaller (900-1200 sq ft.) homes because these minimum lot and floor area size requirements weren't in place yet.
If you're curious about areas with different land-use requirements, there are cities in the US like Boston, Berkeley, or Emeryville (just off the top of my head) with more permissive zoning laws that have much lower car modeshare than other parts of the US.