What has AI ever done for us?

At the moment, legal AI is at the "frothy" part of the hype cycle. It's a bit like the scene What did the Romans ever do for us? in the film the Life of Brian, but in reverse. The scene's premise is that the Romans did little, but of course they did a lot. Legal AI promises a lot but at the moment has delivered little. Somewhat frustratingly, while a decade from now it will be obvious in hindsight that the world beater was going to be "X", right now we don't know what that "X" will be.