I had the 901’s back in the mid 80s. There were very innovative for the time, although the speakers I have today are much better indeed. While I agree with the idea “ Bose success was very much because of marketing success” in all fairness Omar Bose was a very good engineer. I think he put much of his money into the design of a very progressive automobile suspension system that, I believe, was never used in the commercially available market.
https://m.youtube.com/watch?v=3KPYIaks1UY
https://m.youtube.com/watch?v=3KPYIaks1UY