> If you're not advertising how are people going to know that you have something that would be useful to them in exchange for money?
Who cares? Why is that an important thing that must exist in the world? Why must I need to know about everything that could be useful to me (if I'd only pay for it)?
Let's turn this on its head instead. I'm a person who does things. I might be doing some of those things sub-optimally, perhaps because there's a product out there that I don't know about that could help me do them faster, easier, more efficiently, all that.
But if I care enough, if I'm actually bothered with how any of these things I do are working out (or even if I'm not bothered, but I'm just enthusiastic enough to want to learn), then I can actively search for ways to make it better. That doesn't require advertising. In fact, advertising makes it harder, because I could easily be fooled by some slick advertising into buying a product that it turns out isn't actually the best for me (or, worse, isn't actually better than what I'm doing now).
The most honest of advertisers (if that's not an oxymoron) will do their best to make a sale by telling you only the truth about what their great product can do for you. But most advertisers are, well... not that. They'll embellish, they'll leave out important (but potentially negative) information, and sometimes they'll outright lie (and claim they're just being aspirational). And even the most honest of advertisers will lie by omission: they're going to paint their product in the best light, and leave out the negatives.
Ads are a form of psychological manipulation. I don't want that in my life.