It would solve a lot, the search engines are willingly making their results less useful, together, in a trust, a shit-trust. While one way is my example, and they are not blameless in allowing these shit results to be displayed, that is only one way they have started to not serve the user of their product but rather their clients.
But, what do you think would solve it? Obviously a search engine, and index, that is open source wouldn't solve everything regarding the internet being taken over by ai and bots, but it would help with a lot, not the only thing we need to do by a long shot.