If a webpage doesn't show up on Google, it might as well not exist for most practical purposes.
Regardless of why exactly this is the case, it's not a healthy state of affairs.
Regardless of why exactly this is the case, it's not a healthy state of affairs.
Shelf space refers to the market with which someone competes, not whether people are thinking of a candy bar or finding a bathroom or a facebook post. Your argument commits survivor bias because it's ignoring the millions of other websites that exist and are being used. Being popular does not mean something is a monopoly, nor does it mean there's limited shelf space.
Following your example, if Google spammed Pixel ads on it's home page, the page would become less popular. One of the reasons it became so popular was it's strict adherence to focusing on utility.