Home ownership rate in the u.s. is 65%[1]. Considering the relative large homes people live in today, it seems a pretty decent number. Of course there's probably a large class of poor people who haven't got an option to buy decent housing(especially in a safe area) and that's a problem.

Car ownership and cellphone ownership are mostly marketing driven. almost anybody can own some car and phone.

[1]http://money.cnn.com/2011/10/07/real_estate/home_ownership/i...