The proper model for WiFi is:
1. No free refills.
2. expensive drinks.
3. no power outlet.
Within 3 years, deployment of 4G wireless broadband will have anyone who wants to be online at a resuraunt able to do so anywhere.
The key is to keep them spending money.
Interesting!
You might add, "Empty seats."
The solidly established businesses described in the article were able to attract quick-turnover customers to replace the slow-turnover WiFi crowd. Many coffeehouses have plenty of empty seats available even with WiFi users present.
(And I protest, we aren't all freeloaders!)
Who says you have to buy the coffee? Just park your car outside the coffeeshop and surf.