Outside the impressive hardware and NeXTSTEP, NeXT was bleeding most of the time, had it not been for a few generous VCs that had Steve Jobs in high regard, NeXT would not have survived until the moment of Apple's acquisition proposal.
Having your company acquired by Apple, having them base vital parts of their business on your technology, and having your leadership merged into theirs could be seen as a successful outcome.
Did the NeXT investors make out OK?