"How far do you have to drive to go to a supermarket from that development?"
That's the system - resource scarcity and preference. If you live in a densely populated area, prices tend to be higher because real estate is constrained. Zoning won't fix all of that because many people have a preference for SFH, larger sizes, etc. You end up with options and amenities, but it will cost more due to the consolidation. Or you end up with space, needing to drive to amenities, and cheaper prices largely due to less competition.
That's the system - resource scarcity and preference. If you live in a densely populated area, prices tend to be higher because real estate is constrained. Zoning won't fix all of that because many people have a preference for SFH, larger sizes, etc. You end up with options and amenities, but it will cost more due to the consolidation. Or you end up with space, needing to drive to amenities, and cheaper prices largely due to less competition.