It will happen again. The use of the phrase "artificial intelligence" itself ought to be forbidden until such a thing actually exists in the corporeal world.
maybe an 'AI recession' is plausible but a large scale loss of interest is unlikely given that AI / ML / deep learning (pick your favourite word) is already too embedded in commercial application.
Like always the hype in the field is strong, but this time we actually have the data growth we need to produce palpable results (and already have).
And that the over hyping of it today will negatively impact its adoption when ready for general use?