The overwhelming majority of modern games are made purely as money grabbing devices either for personal benefit or for the benefit of stakeholders/stockholders.
I think there might be some bias with that statement. I am sure there are more boring/stupid/corporate games, so indeed finding the great titles might take more effort than before. That being said I have played some amazing (at least for me) games recently - would list NierAutomata, DeathStranding, ItTakesTwo or Gibous (all new, different genres). And all are obviously well funded, professionally done games.
The 13k quake in a browser makes me think about how much stuff is in a browser and how much computing power we use just for abstraction sake. Has benefits but man that's a lot.
The demo scene was crazy but in the end a lot are down to compression/procedural generation. Impressive but you might still require some significant loading time or cpu power, when in the end nowadays storage is the cheapest thing.