An earlier comment mentioned Gordon Letwin[0] (lead architect of OS/2 at MSFT), and that led me down the rabbit hole to an "infamous" USENET post he made re: OS/2[1].
It sounds like there was acrimony all around:
Another problem that came up here was that IBM didn't want us to use the
windows API for the graphical environment under OS/2. Many key folks
inside IBM had always hated Windows. IBM had this crazy thing called TopView,
it was a character oriented windowing scheme and not very good. Bill Gates,
myself, and some other folks made several trips to Boca Raton to try
to explain to those guys why a character oriented windowing scheme was
obsolete before it was even written, but to no avail. One of IBM's most
major problems is that although their top guys may be smart, they
aren't techically savvy.
"...although their top guys may be smart, they
aren't techically savvy. And their low level guys are often neither.
IBM doesn't promote on the basis of your skills and ability; they promote
on the basis of seniority and other secondary factors. So the guy
who makes these decisions often doesn't know what he's doing. And he
doesn't know that he doesn't know, because his peers are equally
butt-ignorant too. So these guys can never figure out how other folks,
including but not limited to Microsoft, keep doing better! Must be dumb luck,
they think. I always agreed that it was dumb luck. If you catch my
drift... :-) "
It sounds like there was acrimony all around:
Another problem that came up here was that IBM didn't want us to use the windows API for the graphical environment under OS/2. Many key folks inside IBM had always hated Windows. IBM had this crazy thing called TopView, it was a character oriented windowing scheme and not very good. Bill Gates, myself, and some other folks made several trips to Boca Raton to try to explain to those guys why a character oriented windowing scheme was obsolete before it was even written, but to no avail. One of IBM's most major problems is that although their top guys may be smart, they aren't techically savvy.
[0] https://en.wikipedia.org/wiki/Gordon_Letwin
[1] http://gunkies.org/wiki/Gordon_Letwin_OS/2_usenet_post