One problem with your scenario. This is a video game. There is no such thing as "winning" especially in a single player bubble. You can beat a game but that is about all. What do you win when you beat a game? Answer: Nothing. This is not a casino. If this were a competitive game then certainly you need to balance the game so that its "sporting" but this is not such a game.
If someone has fun save scumming then all you did was make their experience worse. Let them do what they want.
