Advertising allows relatively cheap, very low effort, access to mass manipulation of a population.
If people had to actually effort to share knowledge - as we evolved to having to do, to excel at story telling to pass on knowledge through generations - then that cost would prevent the kind of rapid indoctrination and rallying people based on hate, emotional and irrational thinking - thought that hasn't been checked with critical thinking.
Process of indoctrination can only exist when fear is constantly present, suppressed-repressed reaction - emotional or otherwise - when ego mind guard is constantly active; Ekhart Tolle in The Power of Now references this and the insanity that this leads to.
If people had to actually effort to share knowledge - as we evolved to having to do, to excel at story telling to pass on knowledge through generations - then that cost would prevent the kind of rapid indoctrination and rallying people based on hate, emotional and irrational thinking - thought that hasn't been checked with critical thinking.
Process of indoctrination can only exist when fear is constantly present, suppressed-repressed reaction - emotional or otherwise - when ego mind guard is constantly active; Ekhart Tolle in The Power of Now references this and the insanity that this leads to.