Nem engedte meg már az akkori jog sem :)
Kildall maintained that QDOS, and subsequently MS-DOS, had been directly copied from CP/M and thus infringed on his copyright. DRI attorney Davis claimed forensic experts had proven that MS-DOS had been copied from CP/M, but that in 1981 there was no way to go to court over copyright infringement and get a judgment. The latter, at least, was not true. One year earlier, Congress had passed the Computer Software Copyright Act of 1980, which made copyright protection of software explicit, so why DRI didn’t take the battle to court at the time is not clear.