They didn't make all parties whole. Purchasers were deprived of access until making another purchase for which they had to expend at least some effort and time. And let's not talk about inflation and interest that mean the the price paid at purchase is not the same as the amount of additional money the buyer would have had at the time of the refund had they never made the purchase. Just returning the purchase price is far from makign a buyer whole. If I rob a bank and get caught and don't get to simply say oops and walk away scott free after returning the money.