[fat-chunk]

Most of the "useful" tasks AI has helped us with are problems that are domain specific and lend themselves well to machine learning (for example object detection in images and machine translation as another poster mentioned).

However, what I think the poster meant was that just tacking on AI for the sake of it to a problem which most likely doesn't have an applicable use for it (which currently is the case for most existing IT projects or apps) is doomed for failure.