I think advertising is still valuable, especially for mom and pop shops and niche products, but most advertising is very fiat. Ideally it wouldn't be targeted, or at least, it would just be relevant upon the context and not surveillance of the individual. I think it's very clever for Michael Saylor to encroach on the advertising business with sats rewards... It could be a very compelling value prop to advertisers; why give other people money when they can just give it to their customers to incentivize engagement and promotion?