At one point, they showed some old footage which featured a montage of daily life in a small Mississippi town. You'd see people shopping for groceries, going on walks, etc. Some would stop and wave at the camera.
In the documentary, they noted that this footage exists because at the time, they'd show it on screen during intermission at movie theaters. Film was still in its infancy in that time, and was so novel that people loved seeing themselves and other people on the big screen. It was an interesting use of a new technology, and today it's easy to understand why it died out. Of course, it likely wasn't obvious at the time.
I say all that because I don't think we can know at this point what AI is capable of, and how we want to use it, but we should expect to see lots of failure while we figure it out. Over the next decade there's undoubtedly going to be countless ventures similar to the "show the townspeople on the movie screen" idea, blinded by the novelty of technological change. But failed ventures have no relevance to the overall impact or worth of the technology itself.