Why did videogames stop improving their graphics?

There is no change in graphics from Witcher 3 to present day.

And?

The graphics must improve more. I payed for it. Developers are lazy.

U cant get graphics that look better then real life at this point its not the ammount of triangles a model has but the resolution of the texture applyed to it

Selling a game has changed. Now it's more about keeping your fans playing for years like overwatch and Minecraft and rainbow 6 seige. Where updates and DLC is worth more than development on a new title

You deserve microtransactions.

This too.

It's hard to make updates and DLCs when you have to do everything to a consistently gorgeous quality. Why not just make it decently nice and save yourself a lot of work?

because this requires skill, that only a talented and passionate game creator can muster to develop for the love of his passion
skill that a whole team of mediocre "game designers", all with college degrees merely proving that they know the vocabulary of the most industry-approved graphic tool, hired at their post by corporations whose goal are to get the highest ratings by conventions journalists to realize the highest number of sales possible can't ever hope to attain

You will work harder, motherfuckers, or I will make sure youre entire industry will get ruined by piracy.

My industry?