The web is currently built on advertising income, if that disappears or reduce massively, should we expect a lot of website to have to shutdown? Bing or ChatGPT would become the main way to access information, which would be an even more concentrated power than the current Google.
And the only way to make money in this context would be to sell products, or provide access to a data moat via an API. That's a radical shift from the current ad-based model.