There are also ads for services. I used to be a photographer, and without my little Facebook/Instagram ads people would have had to largely rely on word of mouth, meaning the more established photographers would absolutely dominate my little rural market even when their photography was worse.
Also, I'm not sure we want a world where only the largest corporations get to sell things. That's what would happen if people could only find things through stores and catalogs, especially pre-internet.
Also, I'm not sure we want a world where only the largest corporations get to sell things. That's what would happen if people could only find things through stores and catalogs, especially pre-internet.