That may be true in the research arena (where Mr Chollet works), but I don't think that's the case in terms of where deep learning is actually applied in indust

That may be true in the research arena (where Mr Chollet works), but I don't think that's the case in terms of where deep learning is actually applied in industry, nor will it be the case for years to come IMO. It's just that much that needed to be invented has been invented and now it's time to apply it everywhere it can be applied, which is a great many place.