You're right and everything is going to change. On the other hand it isn't technically completely true. Advertising and sales, are product info and persuasive

You're right and everything is going to change. On the other hand it isn't technically completely true. Advertising and sales, are product info and persuasive information. Product info is relatively straightforward I think. Persuasive information is credible information about the buyer that explains why the product is needed. The reviews on Amazon serve this need. The websites of camping enthusiasts or cooking enthusiasts etc etc serve this need in Google. They aren't going away, the work is being done by entities other than the manufacturer. They're being outsourced to amazon or the buyers peers, but the work still needs to get done.