First they killed Bookstores, then they killed books, then they killed other brick and mortar stores, then they eliminated the need to leave your home for food. Now they are coming out with a Grocery Chain.
Amazon is starting to test a new service that eliminates the checkout line in Grocery stores. You come in with a smart phone, tap the scanner to tell when you enter the store, you pick up your prepackaged groceries, it adds the items to your virtual cart, then when you leave the store it charges you for the items that you didn't put back. All without a cashier.