Apple was the enemy of IBM way back when Apple had started. IBM saw Apple as a "toy computer company", and thought it would be cute to make their own "toy computer" based on Intel technology that was an almost copy of the Apple ][ design with expansion slots, etc. Apple had dominated the market from the mid 1970's to the early 1980's, and may have been seen as a villian by some, but they were totally against IBM, and IBM's big iron systems. Apple claimed an Apple ][ could do the same sort of things as an IBM Mainframe or Minicomputer at the fraction of the cost. VisiCalc on the Apple ][, for example, allowed small businesses to handle some simple accounting problems, but IBM followed suit with the IBM PC and got Microsoft to write a version of DOS for it, and the rest is history. Once IBM learned that using off the shelf Intel type parts, that anyone could also use, and one someone figured out how to make an IBM compatible BIOS, and Microsoft sold MS-DOS to the IBM PC Cloners, it was too late. The Genie was out of the bottle and granting wishes to anyone who OEMed MS-DOS and later Windows. Now Microsoft is the villian. Had IBM wrote their own DOS, or used DRI instead, history would have unfolded differently.