I still would pay for good search without ads. Definitely google should make more than me clicking ads, which, in the past 20 years (or however long it is that google has apps), happened 0 times. I know why, but there must be a model that works like that?
If GPTSearch ends up as infested with spam and ads as Google it will be little more than a new input interface with embedded ads in the output.
Part of the appeal right now (for me) is it's lack of SEO spam and over the top ads.
That won't last (obviously), at least not for their mainstream implementation.