It really was a remarkable operating system, way, way ahead of its day.
As was NeXTSTEP. The difference being it was, by that point, a mature OS and framework set with a wide variety of actual deployed applications, cross-platform support, tooling. BeOS, in comparison, was a clever and incomplete tech demo. And Apple had no shortage of those (Copland, Taligent, SOM, OpenDoc, PowerTalk, etc, etc, etc). Buying another one would have been catastrophic.
As was NeXTSTEP. The difference being it was, by that point, a mature OS and framework set with a wide variety of actual deployed applications, cross-platform support, tooling. BeOS, in comparison, was a clever and incomplete tech demo. And Apple had no shortage of those (Copland, Taligent, SOM, OpenDoc, PowerTalk, etc, etc, etc). Buying another one would have been catastrophic.