That can all be trivially fixed by style of seating and tables, removing all power outlets and so on. People who don't go there to work won't care.
I live in the country with probably the highest sit-down cafe density cities in the world (Korea), and this issue has been figured out ages ago. If you know any such cafe owners who don't understand how to deal with this, I'm happy to have a chat with them. Or they can come over here and I can show them a dozen cafes so they can see it with their own eyes.
You simply set up the cafe to accommodate the exact % of such laptop users as you're comfortable with, which can be 0%, 100%, or anywhere in between. If you do for some reason want to run a cafe where 100% of seating is usable for laptop workers, then the way to keep it all profitable is also straightforward: 1. you make your cheapest coffee (converted to Dutch CoL) 7+ euros a cup (use some single origin stuff that's still cheap when bought from wholesale). 2. As food, only offer small sweet bites and make those similarly overpriced. 3. Make the seating dense so you can fit a lot of these office workers. Bar seating is especially space-efficient for this.
The Netherlands even has an advantage; people can't just leave their setup on the table and leave for hours as it may well get stolen - this is not an issue in Korea so some people actually do this, the worst case scenario for cafe owners.
I live in the country with probably the highest sit-down cafe density cities in the world (Korea), and this issue has been figured out ages ago. If you know any such cafe owners who don't understand how to deal with this, I'm happy to have a chat with them. Or they can come over here and I can show them a dozen cafes so they can see it with their own eyes.
You simply set up the cafe to accommodate the exact % of such laptop users as you're comfortable with, which can be 0%, 100%, or anywhere in between. If you do for some reason want to run a cafe where 100% of seating is usable for laptop workers, then the way to keep it all profitable is also straightforward: 1. you make your cheapest coffee (converted to Dutch CoL) 7+ euros a cup (use some single origin stuff that's still cheap when bought from wholesale). 2. As food, only offer small sweet bites and make those similarly overpriced. 3. Make the seating dense so you can fit a lot of these office workers. Bar seating is especially space-efficient for this.
The Netherlands even has an advantage; people can't just leave their setup on the table and leave for hours as it may well get stolen - this is not an issue in Korea so some people actually do this, the worst case scenario for cafe owners.