The proper way to do this is to first perfect AI at spotting all the dark patterns and ads that exist today, and automatically filter all of that shit (including never buying anything ever from companies that have done SPAM a single time in their entire history).

Then figure out what the real human wants ahead of time, and it can go out and find the best deal / best value / best long term reliable company / whatever the HUMAN wants...

Of course it will never be done properly