This is my thought as well, but then again I'm a person who does their research, shops around, knows the general price of items, etc. Some marketing practices are far more scummy than others. Not all marketing is equally scummy. And I think it's incredibly disingenuous for people to claim that they all hold similar weights in terms of how dishonest and manipulative they are. And as you said, at the end of the day, if you buy something from a supermarket, you're generally going to have something to show for it that will contribute to your life.
I don't shop at big department stores. For one reason, I never did like the big department stores like Macy's and whatnot. The last few times I've gone to one of them in the last decade, I will generally look up the same item online and find that it's 1/3 the price just to order online than it is at the brick and mortar. But again, I do my research.
Another thing on the issue of professional critic scores vs user scores, does everyone remember when the Metacritic professional critics scores were listed near the top of a game's store page? That same spot, at the top of the steam page, has been replaced by user reviews, being overwhelmingly positive, very positive, mixed, etc. The professional critic scores have been relegated to the bottom, where nobody generally looks any more unless they're still reading materials on the game and aren't sold on the game just yet.
And again, those in the know, know that "professional critics" are just another branch of marketing for video games. IGN in particular has been terrible about this, many of their former reviewers outright admitting they got paid to give certain games higher scores, when they didn't believe the game deserved it. The video game publishers have a vested interest in getting a high critic score, so they can plaster it on advertisements for their game. Thus the counter to the statement made earlier in this thread that when publishers advertise their game, they use critic scores. It's all marketing, and dishonest. And has nothing to do with how good a game actually is. Players have been waking up to this reality for years now, and critic reviews have become gradually less and less trusted by the gaming community. Perhaps some "dads who don't have time to play video games for more than an hour a week and thus need pay to win" will fall for such marketing, but gamers at large are rejecting pro critic scores.