In dense cities there's simply no need. There's restaurants, convenience stores, food trucks, and bodegas everywhere. And the restaurants will run the gamut f

In dense cities there's simply no need. There's restaurants, convenience stores, food trucks, and bodegas everywhere. And the restaurants will run the gamut from multi-$100 many course meals right down to $5 will get you a meal fast food. Many of these restaurants are on the first floors of apartment buildings anyway, so it doesn't even look that different from a shared kitchen/dining space anyway (it's just not exclusive to the residents of the building). And in not-dense cities, people tend not to live in buildings with enough units in them to even support this. That's why the university thing is kind of an edge case; it's people living in dense housing situations in not-dense places.