GPL loophole

Program X is GPL'd. You want to modify it but don't want to release your modifications. Slightly modify the source of X so that it can dynamically load foreign executable code. Have it load your proprietary additions.

Release the source of your Program X fork as GPL, but do not reveal the source of your proprietary additions.

>>11
Copyright makes perfect sense in the original intent of the system. Unfortunately it's been abused and misappropriated so that the big companies are the ones that profit.

The copyright term should be no more than thirty years or the life of the author (plus nothing).