[xdennis]

I'm not convinced that subpar graphics is the reason for the lack of browser games.

I'd suggest that the reason is monetization. People are used to buying phone apps and console games, but expect web pages to be free. And open source is good at software but not games.

[dakom]

I think that's part of it, but the other part is load times.

People are fine waiting the 10-30 minutes for a game to download on Steam or console. But they don't want to wait more than a few seconds for webpages.

Also, techies understand that there's ways of agressively caching,but I don't think average users register that it's just a first-load issue.