It is a strange turn of events that DRI did not supply the dominant OS for the IBM PC. Before watching this I didn't know that CP/M-86 went for $240 and PC-DOS for $40. Gates' shrewdness (I'll call it that) enabled him to control the PC (as in IBM PCs and clones) market. Sounds like Kildall was a great guy and a genius, who did not win in the "business is war" competition. I remember working at Egghead Software and GEM being superior to the Windows of the day, but it never took off. Xerox (who should have owned GUI computing) made Ventura Publisher based on GEM. Now Gates wants to be seen as a kindly benefactor to us all.....