You are talking from a perspective of games as a medium for an artist with a certain bias and an audience that is interested in this specific bias.

You say "vision, colors, positioning, etc", yet you have Candy Crush being the most played game on mobile for 13 years which simply employs direct signals and ques from cognition and cognitive neuroscience to achieve this.

The games that you describe are a small subset of what the general public is playing or is interested in.

This can further be pushed into a monoculture by shaping the players expectations about what a game should be. Maybe Skyrim has too much walking and dead-time, it's better to optimize for fast combat and action, like in Fortnite, and mold the playerbase in a way which makes them susceptible to simpler games more tuned to neurophysiology.