> This is not true. It could be enforced by courts and not by computers.
No, this doesn't get you through the century with copyright intact. Bandwidth and storage only get cheaper, and copyright-able files are not getting proportionally larger.
Eventually--and the 21st century does seem like a reasonable timeframe--something like Google Glass is going to become the norm, for all people, all of the time. Somehow or other we will patch the imperfections of memory and information exchange; think of it like recording everything you see and hear and being able to instantly share those recordings with those around you. We can already do this with a sentence or two of text or the gist of a melody! In the future it'll be a full book, or a song. It's no different from inventing vehicles that allow us to travel at hundreds of miles per hour.
What does copyright look like as the ease of recording and repeating an experience increases at the rate of the past few decades? If technology is in reach that would blur the line between "recording" and "remembering", and "recounting" and "copying", are we going to just say "no" to it? Allow our memories and communication skills to remain in their ancestral, imperfect state just because it is imperative that those who "own" certain bitstreams be paid whenever they reach a new consciousness?
Human courts can't enforce copyright when faced 2050's technology. Not when we can "memorize" and "repeat" everything we hear with the same ease that we memorize or repeat a haiku today.