>They wanted to maximize revenue and not force people to re-train. It slipped and slipped and slipped...
And don't forget the 80386 was released in 1985. In fact MS had the early OS/2 2.0 SDK betas in around 1990 which continued until MS broke the JDA in mid-1991. And while Chicago was slipping, look up "OS/2 Microsoft Munchkins" for some of the unethical tactics MS used to attack OS/2 after the JDA was broken. And I hasn't even mentioned DR-DOS yet.
In fact, MS screwed up the protected mode transition so badly I could write an entire article about this history, starting with when Intel announced the 80286 in year 1982 but MS ignored it and made the mistake of wasting years writing a real mode multitasking DOS. Then IBM refused to license it, which led to the JDA in 1985, which resulted in the 286 protected mode based OS/2 1.0 being released in 1988 which was what should have been finished by 1985 in the first place. Problem was that the 386 was introduced by Intel in 1985, and I could go on about Windows/386 and Windows 3.0 etc including the MS OS/2 2.0 SDK betas mentioned above...
And don't forget the 80386 was released in 1985. In fact MS had the early OS/2 2.0 SDK betas in around 1990 which continued until MS broke the JDA in mid-1991. And while Chicago was slipping, look up "OS/2 Microsoft Munchkins" for some of the unethical tactics MS used to attack OS/2 after the JDA was broken. And I hasn't even mentioned DR-DOS yet.
In fact, MS screwed up the protected mode transition so badly I could write an entire article about this history, starting with when Intel announced the 80286 in year 1982 but MS ignored it and made the mistake of wasting years writing a real mode multitasking DOS. Then IBM refused to license it, which led to the JDA in 1985, which resulted in the 286 protected mode based OS/2 1.0 being released in 1988 which was what should have been finished by 1985 in the first place. Problem was that the 386 was introduced by Intel in 1985, and I could go on about Windows/386 and Windows 3.0 etc including the MS OS/2 2.0 SDK betas mentioned above...