Fast food places killed off all the poor quality local places, so the only ones who can survive are those who are either dirt cheap (e.g. food trucks, hot dog

Fast food places killed off all the poor quality local places, so the only ones who can survive are those who are either dirt cheap (e.g. food trucks, hot dog stands), have a captive audience (e.g. movie theatres, ball games), or are low capacity so can't compete with the quickness of fast food. But before this, you could see poor quality local food places on highways. McDonalds and co came in and create a price/quality floor. You couldn't be worse than them.