NeXT software on lower end Apple hardware was a winning combination.

And the software ecosystem was already in place (even though everything had to be rewritten).

Not all products, NeXT was a major failure, with a few books telling the story how it all went down, only due to Apple's acquisition there was a moment that with Apple's remaining cash, and what was left of OpenSTEP, they managed to survive both companies.

Had Apple gone with Be instead, most likely all three companies would have gone bankrupt before 2000, and Pixar would be Jobs last successful company instead.