Considering Glaze and Nightshade have been around for a while, and I talked about sabotaging scrapers back in July, arguably, it already has.
Hell, I ran across a much smaller scale case of this a couple days ago:
Not sure how effective it is, but if Elon's stealing your data for his autoplag no matter what, you might as well try to force-feed it as much poison as you can.
Considering the massive(ly inflated) valuations running around Big AI and the massive amounts of stolen work that powers the likes of CrAIyon, ChatGPT, DALL-E and others, I suspect the content mafia is likely gonna try and squeeze every last red cent they can out of the AI industry.