People have been claiming this in response to piracy for decades, yet people still go out and buy the official game.
Perhaps game developers already have the tools they need: try distributing your browser version of a game anybody cares about instead of a 20 year old game. This game isn't even available on Steam/GOG.
Only 20 year old games have any hope running in the browser. And why would anyone pay for a game running in a browser? It doesn't make any sense.
> yet people still go out and buy the official game.
Not all people, especially not if piracy is easy.