Got any data to back up the fact?
I got anecdata of people shopping for gargantuan 3-row SUVs so they can accommodate the third child seat. Most people don’t seem to mind as it’s “only” a monthly payment. (Over 8 years it’s a fortune in interest let alone the actual cost of the vehicle but most people don’t think that far ahead)
To add my and data as someone who recently got a third child: number one question i get askes is whether we are going to move (we live in an apartment in the city) number two is a comment about cars size. So I am pretty sure people consider this when they think about having another child.