AI will be much used for Illustration; especially illustrations for Advertising which attempt to pretend to be real photographs.
At the moment the tell-tale signs of the use of AI-generated images are seen in images of hands, feet, skin-texture, eyes and are clearly obvious in the unmatched lighting in different parts of the composite. This will improve with time.
My personal view is that I only want to use photographs which I have shot myself so I have never bought Stock photographs.
I may use AI techniques and editing to combine a better sky or background with a foreground object but all of the components of the final images will have been generated by my own cameras.