Earlier quoted context omitted.
In the early days of the web, you used to be able to tell NY v. CA dev shops online because all the NY shops only had "search by state" while CA had "near my zip-code". When you can pass through 3 states in 3 hours, it makes sense to "search for all McDonalds in NJ". However in TX and CA, "all McDonalds in TX" is worse than useless for what the customer is actually looking for.
McDonalds is probably the wrong example here. There are of order 500 McDonalds in NJ.
750 McD's in New York, a state of 55,000 sq mi, ratio of ~0.015
1,250 McD's in Texas, a state of 270,000 sq mi, ratio of ~0.0045
1,500 McD's in California, a state of 165,000 sq mi, ratio of ~0.009