We built Basecamp while I was working from Copenhagen, Denmark. I currently live and work and wrote that piece from Spain. Out of some 35 people, only about a third has base in Chicago. Out of that third, maybe half of them go to the office every day.

OP's argument didn't depend on the company being built entirely by a remote team. He just said that remote workers will become more popular.

That can mean entirely remote teams, or a team with a Central location and many remote workers.