I have to make a refutation regarding this. Mostly companies don't accept these kind of bills because they don't got enough change in store or they won't have enough change for the next customers. However, these prohibition signs are not new, most gas stations over here (the Netherlands) have them as well. Also, 200E and 500E are rarely used, people get some weird look on their face if they see them. This is probably due to the bank itself or the casino basically being the only places to obtain these kind of bills, since ATM's over here won't give you bills bigger than 50E.