Coffee shops have become nearly all day affairs. Like a bar, the key product has really high margins and you don’t need many employees. So once you sell enough

Coffee shops have become nearly all day affairs. Like a bar, the key product has really high margins and you don’t need many employees. So once you sell enough {coffee, tea, beer, wine, cocktails} to cover your rent plus a handful of employees, you start making a (small) profit. tl;dr: Hot water is cheap!