Austrian here, we spend all day in coffee houses to study, work, read the newspaper (most Viennese coffee houses have all major newspapers/magazines there for free), meet friends. Noone is forced to leave if they don‘t keep consuming - same is true for restaurants, by the way.

I don‘t think we would have a coffee house culture if making money was the main incentive for these businesses. DC has better coffee than Vienna, but no coffee house culture (I‘d argue because of a pervasive capitalist mindset).