[tsimionescu]

Copyright law has the exact same purpose for digital goods as it did for physical books. Copying books has not really been hard since the 1450s or so. Copyright has always been about maintaining the value of books and other art works in the face of vastly cheaper copying.

The only important difference between physical copyright and digital copyright is the fact that you aren't allowed, in most jurisdictions, to sell on your legally obtained digital copy of something the same way you are for a physical copy. And even this is understandable.

The big problem with copyright is not the existence of it. It's the absurd terms it has gotten to. If copyright maxxed out at, say, 10 years, or even 20, we would live in a much better place than either today or even than a world with no copyright at all.