Wi-Fi is on cable operators' radars as a way to increase home use, and provide roaming for users: The article starts out talking about the specific opportunity for cable operators to provide Wi-Fi as a home networking tool (although operators say it's the dominant method used by their subscribers already), but also to extend their reach to users outside the home. Some small operators have already discovered that they can add on a subscription fee for usage at hot spots that allows them to capture more revenue.
Late in the article, Wayport's marketing director notes that Wayport is in "massive deployment mode." No real signs of that yet: I'm wondering when that materializes, as Wayport's node count has been relatively steady for three years.