Comment by rahulyc
I think your argument isn't exactly right.
You can imagine a future world where producing real goods and services is ~free (AI compute infinite etc.)
In this world, the entire economy will be ~advertising only so you can charge people anything at all instead of giving it away for free.
If your revenue model is predicated on Star Trek-style communism, it's maybe not a very realistic model. I really don't think if producing things is essentially free that advertising will be a very big thing since it would be pointless.