I wondered this as well when I lived in Seattle. The public library system in that city is phenomenal. Many of the small branches have nice modern designs and y

I wondered this as well when I lived in Seattle. The public library system in that city is phenomenal. Many of the small branches have nice modern designs and you can always go to the Central Library which has tons of desk space, power outlets, and window seating. Internet access wasn't blazing but I never had issue with blocked ports nor was it ever "too slow to do work". Not sure about all the branches but the Capitol Hill branch has a decent sized meeting room which a monthly Tech Startup meetup used to use (though that was 3 years ago now).