Walkability does not equal a safe or desirable apartment. Westlake in Los Angeles has a "walk score" of 91, very high meaning you can get all your needs met without a car. Doesn't make it a paradise, this area is high in crime and homelessness, and no one with a family moves there unless they don't have other options, which is why it is primarily populated by recent immigrants from Central America who have few other options.

These services seem important, but people sacrifice them all the time, because they prefer space, safety, and school districts, to the novelty of walking to a convenient store. The most expensive houses in LA are up in the hills, where it takes you 10 minutes just to drive down windy roads with zero sidewalks before you even hit a shop of some sort at the bottom. Being able to walk to your errands is just not prioritized in American real estate over the three S's. People willingly take an hour commute for these things.