You're missing a key factor. It's not "knowledge of what they don't have" that advertising brings. Advertising is highly sophisticated psychological manipulation, refined over that lat 100 years, that invents "needs" and "wants" in the target subjects. Much of that manipulation is preys upon and creates in securities, inflicts unhappiness and other manufactured "ills". Then promises to relieve them if you buy.

It's artificial. If they just had knowledge, like say wikipedia or ad blocked internet. They would be wanting real things like education, health care, self-determination, not Nikes.