Comment by direwolf20

GOG may have the right to revoke a sale, but since it lets you download the game without DRM, it doesn't have the ability. Unless you delete your copy of the game and then try to download it again.

If you buy milk from the supermarket and they reverse the transaction 2 days later claiming you used a fraudulent card, but you didn't use a fraudulent card, you have the right to keep the milk and the loss of money is the store's problem.