I was never under the impression that MS-DOS (QDOS) was literally stolen from DRI, but that QDOS was a clone of CP/M back in an era when software copyright wasn

I was never under the impression that MS-DOS (QDOS) was literally stolen from DRI, but that QDOS was a clone of CP/M back in an era when software copyright wasn't clear. Microsoft licensed QDOS but didn't buy it outright, and later made a deal with DRI to cover its ass. Both the original developer of QDOS and DRI ended up with the rights to sell DOS products. (As did IBM.) Years later, DRI was selling its own version of DOS (DR-DOS) which was widely considered technically superior to MS-DOS or PC-DOS (e.g. At one point it supported preemptive multitasking and could also run Windows 3.x iirc.) The real "theft" was that when the original developer of QDOS went bankrupt, its mos valuable asset was its DOS license. But when it tried to sell it Microsoft sued and forced the owner to sell the license to Microsoft for a very low figure. Meanwhile, DR-DOS was killed using a combination of deliberate incompatibilities and eventually Windows 95. I never used DR-DOS, but I remember greatly preferring PC-DOS to MS-DOS because the default text editor was so much nicer. The fact the article makes zero mention of DR-DOS is a bit puzzling. http://en.wikipedia.org/wiki/DR-DOS http://en.wikipedia.org/wiki/DR-DOS