> That seems more like an artifact of it not being popular than a feature of the protocol. If companies wanted to, they could just run native advertisement on Gemini just like they do elsewhere, just disguise the ad as regular news article and call it a day. Nothing stops them from putting banners on top of every page either or how about showing you an ad text before you are allowed to visit the actual content? You could even have a server-side wait time before you are allowed to move on from the ad.

The problem that people have with ads on the web is cross-site tracking and targeted ads. Gemini protocol does indeed prevent that by restricting one request to just one response. Non targeted ads wouldn't be a privacy concern, or even an attractive option.