This story is largely another take on the free vs. fee debate: The general conclusion is that venues will find they won't make any money by charging for Wi-Fi because no one is willing to pay and if they can't make any money they won't bother offering Wi-Fi access for free. One angle this writer neglects to consider is the increased business that Wi-Fi can lead to for some businesses such as cafes. A lot of venue owners say they see increased visits during traditionally slow hours by Wi-Fi users, who even though they don't pay for access do pay for food or coffee.
One business owner in the story is quoted as saying that people expected Wi-Fi to become a mass market product but it's still mostly for business users. It'll remain that way unless there are applications running on the networks that the mass market finds worth using.