At least Wikipedia is supposed to cite its sources, while AIs don’t.
https://chatgpt.com/share/6984c899-6cc4-8013-a8f6-ec204ee631...
Even if a pupil does pay, they will either be too lazy to wait the nearly 10 minutes it takes for the AI to do its research, or they actually care about getting good grades and therefore won't outsource their research to AI.