Physics of energy density is missing from any discussion.
The density of energy and power in Coal/oil/NatGas/nuclear is magnitudes greater than wind/solar. Waterfall and geothermal comes close. More power comes into you home thru copper/aluminum wires from the electric company than falls on you house from the sun.
No amount of wind is going to make a passenger jet fly 600mph. No amount of solar can power cargo ship across the Pacific.
Most of the "eco-friendly" suggestions look like toy batteries when you do the Energy/Power density comparison.
Physics is a fact of life that you cannot legislate away.
Remember, Al Gore's home state of Tennessee tried to legislate the value of PI=3.0, look how well that worked.
Airports have captive audience.
Are you suggesting the price of food in airports is competitive?
When you are the only vendor or severely limit selection to only those approved, then you can charge what you want. Airports, Movie Theaters, University Bookstores, Sports stadiums all feel they have a captive audience and can charge more.
Hotels that signed long-term contracts for Wireless access are now locked into charging guest $10/day and scaring away business.
I still think WiFi is valuable and worth paying for in some instances. But businesses like Bookstore(B&N), Coffee shop(SBUX) and restaurants (MCD) use WiFi to increase their business, increase their traffic, drive customers to their door and then make money doing what they do best.
Techdirt has not posted any stories submitted by Ajax4Hire.