Bill Gates wrote his famous letter thirty years ago, tomorrow:

http://www.blinkenlights.com/classiccmp/gateswhine.html

In the meantime, people are still missappropriating software, the “hobbyists” have returned with a vengeance and have built software that rivals or bests Mr. Gates’, and the economics of the industry still aren’t entirely clear. What economist would have ever predicted the success of Open Source? They’re certainly fascinated by it now that it’s here.