How is The Cage a failure? NBC saw enough promise in it to order a second pilot. That was unprecedented at the time, and probably still is.

It was released as a standalone video in the 80's, even when the only complete version was partially black and white. Most "failed" pilots these days are never even seen by the public. Networks used to blow them off during the summer when I was a kid though.

It would be nice if CBS collected all those docs and tv specials that only saw the light of day on Laserdisc in Japan, and released them in 2016.