I don’t understand what you’re getting at. What you’re essentially saying is that the problem with capitalism is that popular stuff stays popular. That has nothing to do with capitalism and would exist in any economic system. Think back to your school days, there’s no capitalism system saying “X is cool,” that was just the majority opinion at the time (e.g. for something like local slang, not something advertising-driven).
What you seem to be really complaining about is a lack of exposure for smaller studios. That’s a hard problem to solve because when a studio gets popular because of a good game, it quickly becomes a larger studio, and thus “part of the problem.” Franchises have an incentive to change very little so they can maintain their customers. If your favorite restaurant drastically changed its menu every year, you’d probably stop going. The same is true for game studios, if the studio changes a lot from what sold well, there’s no longer an expectation that it’ll continue to sell well.
Finding good indie games is hard because there’s so much inconsistency in the marketolace. Big studios offer consistency, and they’re rewarded for it, yet they’re not that interesting because they have an incentive to avoid risks. Indie studios live and die by the risks they take, which is what makes them interesting.