With your wallet. Don’t buy the pretty game with the shallow gameplay or bad story. Buy the indy title that’s not as pretty, but has compelling gameplay or interesting story. The big devs will eventually notice.
And they’ll try to buy the indy or muscle into the indy space. Then we’ll be able to see if they learned anything or if they are just chasing trends.
The trend chasers will put out a slightly prettier indy title with mediocre gameplay and a story that falls short. These will be filled with unnecessary microtransactions. Game might be worth playing. Individual call.
But we might start seeing some indy titles with a big budget publisher behind them. Meaning we get good graphics to go along with the compelling story and solid gameplay. The indy studio will have to fight the big publisher to maintain their vision and stave off predatory microtransactions. Watching Arrowhead Studios (developer of Helldivers 2) do this with Sony (the publisher and IP holder) right now.