The common non-tourist behaviour in a café in Vienna is to sit there talking for hours, buying a few cups of coffee total. It has been like that since before laptops were a thing. Yet the cafés remain viable.
Same here in Greece.
I’m going to build a cafe inside a faraday cage someday.
Just to see what happens.
Maybe I’ll not serve alcohol and call it Zero Bars.
Better yet, serve alcohol and call it Bar/No Bars.