I had the same question, so I was sure to be there to audit this class. It was great. He goes into Geoff Moore's product distribution model... underscoring the importance of finding early adopters rather than already established huge guys who think a new technology is too risky. He acknowledges that if you build it they're not guaranteed to come. He shares several anecdotes from his time building Ascent Technologies, which I believe is airport-plane-traffic-management software (with AI) used by 80% or so of all airports in the U.S.
Good catch. I can't seem to find it either on YouTube.
According to a YouTube comment... Prof. Winston did not allow OCW to share that lecture, no reason was given.
He's keeping a competitive advantage for MIT students probably :)