Theres nothing more refreshing than standing in a cool, summertime rain shower. Or bathing in the warm sunlight on a crisp spring day. Or inhaling the cool autumn air, fresh with the scent of turning leaves and pine needles. These things — rainwater, sunlight, air — have long been assumed to be not only free, but un-claimable. You cant claim to own the sunlight that falls on my front yard, for example. A corporation cant claim intellectual property ownership over the air that you breathe and demand you pay a royalty for inhaling.