Closed source downloadable software is "dead" unless it doesn't require you to login to their servers at the start of the game and acts as a thin client.
These publishers will find a way to lock it down for new games and tie it to their servers to run it, or have the game streamed to you; simulated via a world model or not.
These publishers will find a way to lock it down for new games and tie it to their servers to run it, or have the game streamed to you; simulated via a world model or not.