Coffee shop I used to work at made the conscious choice not to have any customer-accessible power outlets, so people were limited by their laptop batteries. I was told when they built the place, they debated between offering free wifi, or having plugs in the cafe. They ended up offering wifi, but no plugs. Seemed to work pretty well, I don't remember there being a huge crowd of people staying long. Although it was also a small shop with fairly limited seating.

Although, that plan is faulty now, given that I could easily get 6-8 hours of work out of my Macbook, thanks to the M1 chips.