Comment by dangus

This is true. Big brands that have advertisements all over like Coca-Cola do it precisely because their position is so saturated and dominant.

They need to remind you about them even though you already prefer them and know they exist because they want you to buy more than you would otherwise.

I still think a lack of advertising for smaller competitors really would be devastating. DuckDuckGo and Reddit achieved pretty amazing recent growth aided by major outdoor ad campaigns. These were sites that were not market leaders in their categories and had a lot of catching up to do.