Roughly 60% of the US housing inventory is composed of single-family detached houses[0]. Even if we assume an EV isn't practical for half of the households living in those units for some reason (need more range, can't have a charger installed for some reason, etc.), there's still a huge amount of room for EV marketshare growth without addressing that problem.

[0] https://www.census.gov/hhes/www/housing/census/historic/unit...