As coffee shops cut the cord, are they cutting their own throats?

Small business owners, sole proprietors and students who call the local coffee shop their office are no longer welcome, at least according to this Wall Street Journalarticle. And if it's true, this trend will be another nail in the coffin of the battered independent coffee shop industry.

Why do I think this? I was one of those nightmare customers who bought a cheap cup of coffee, parked myself in a chair near an outlet, and then tuned out for the next three hours as I sucked up the shops WiFi. Admitedly, for those three hours, I was not a money machine for the coffee shop. But viewing me only as a three-hour mooch is misleading.