I disagree with the implicit assumption that llms can’t be gamed. There’s simply too much money to be made for that to remain true.
Once ads are added there is, again, a motivation to make replies very long and rambly. Even now I begin getting "annoyed":
Yes it's grammatically correct and "humanly" sounding but all I really want is five dashes with ingredients and instructions for an apple pie.
Given enough time, I'm confident the "Certainly I can help you. Here's what you need to..." will once again turn into a paragraph or two to have more opportunities to sell to advertisers.
The economics still don't seem to favor brief responses.