I think more likely is some point where Google search has no organic results, but rather, a mix of "KG", widgets, and ads. You can already see the progression...there's many searches that include nothing but Google content until you scroll way below the fold.

Edit: One interesting query is "cancer cure". On my reasonably large monitor, nothing organic showing unless I scroll down. Anything travel related is similar, like "vegas hotels".

Edit2: If you disagree that the importance of the plain organic results is fading, please explain why they keep moving down. Google does understand what "below the fold" means in terms of what's important and what's not. In fact, the algorithm penalizes sites that place the important content below the fold, beneath things that are self-serving.

More likely would be Google Shutting Down Alphabet

Unless search and ads somehow die off as a cash cow catastrophically, that's always going to be the tail that wags the dog.

Or perhaps more realistic in the short term: Google announcing to shut down Gmail beta(tm) over the next several months.

As long as they keep Project Zero around...