Alternatively, just change your browser's default search shortcut, and add &udm=14 to the end of the normal google search. It changes the default search results to "web" rather than "All", which removes all the extraneous crap they've added over the years.

Compare https://www.google.com/search?q=test to https://www.google.com/search?q=test&udm=14

You can block the entire AI response, but not the paid-for product placement in the response separately.

Could also just block the element in ublock?