Comment by palmotea

> I guess the argument would go that a new economic model will be required at that stage.

> ...but at the point where there isn't enough economically useful things for everyone to do, the current system falls down.

Not necessarily. To quote the Bobs from Office Space: "He won't be receiving a paycheck anymore, so it will just work itself out naturally." No need to change, just let the plebs die out.