The idea feels like sci-fi because you’re so used to it, imagining ads gone feels like asking to outlaw gravity. But humanity had been free of current forms of advertising for 99.9% of its existence. Word-of-mouth and community networks worked just fine. First-party websites and online communities would now improve on that.
The traditional argument pro-advertising—that it provides consumers with necessary information—hasn’t been valid for decades.
It’s also a form free market distortion that actual economic conservatives should hate.
Rather than having firms compete for who can make the best product or service, advertising instead lets them compete based on who can best psychologically manipulate the population en masse.
It’s a “rich get richer” mechanic that any halfway competent dev would’ve patched out for balance reasons a long time ago.