But what if it kills current ad-tech as we know it (paying to show ads on random sites without any way to verify that the site is legit), and the flow of ad money for legitimate goods turns back to journalism, magazines and other publications?

That would be half a trillion[1] redirected to regular people just from Google Ads.

[1] snatched my number from here: https://pixis.ai/blog/2025-google-advertising-benchmarks-for...