I thought that was about WordPerfect etc rather than NetWare.
Totally agree that Microsoft did some bad stuff, I just don’t remember there being any malign attempts to disrupt NetWare integration.
NetWare was the main player in PC networking at the time, so arguably it would not have been a good strategy.
It’s absolutely true that the NDS integration was an issue, but my memory is that this was a quality/competency issue on both sides, and not due to a lack of cooperation.