I think we need to start being very realistic here.
Google has ad buying customers who want their ads served, and it's those customers that would probably opt into the SDK and API in the first place. Scope matters.
Next there's a plethora of freeloaders on the Internet who consume mountains of content but who scoff at paying for or contributing to the Internet.
Lastly I'm not seeing anything here that says it will block a site like Lemmy for example.the one thing I do find problematic is this potentially limiting competing browsers