This doesn't really solve the issues with advertising though. I believe the main reason so many developers want their games on Steam is because of the greater attention they get rather than the distribution side of things.

That said, I think the niche of casual remote party games would probably work very well here. During the height of the pandemic my friends and I started doing a lot of "remote game nights" with various different kinds of games. However since most of them rarely played games, owned macs and weren't very technically inclined, the games that had the least friction were generally the browser based ones.

Since party games by nature tend to be great at organic advertising and benefit the most from quick easy installs, I think there is a big opportunity here that not many have taken notice to yet.