A good chunk of games DID change with it. The Unity engine makes it very simple to design games for Web. But it’s also easy to make those simple games for mobile instead, which has fewer restrictions abd is more prolific. In fact, a good chunk of the bigger flash game companies migrated to mobile. There’s just little demand for a web game when I can create a mobile one, monetize it more easily, and reach a larger audience by making it for mobile instead
You’ve got it all wrong. It’s supposed to be a small cave behind a giant waterfall, not the other way around.