answer to 1, 2, 3

Customer lock-in: Select one: O prevents firms from developing a long-term relationship with their customers. O reduces firm profitability because it increases the costs of working with specific customers. O typically arises because of high switching costs. O cannot be achieved using proprietary standards. With multi-period pricing: Select one: O All of these are correct. O the firm is intending to charge a higher price to their 'locked in' customers at some time in the future. O the firm is reliant on network externalities to remain profitable. O the price is separated into two components, one of which is paid up-front and the other is paid later. When a firm sells one or more products for less than their marginal cost, in the hope that customers will buy more of other products the firm sells, the firm is engaging in: Select one: O crowding out. O multi-period pricing. O loss-leading. O price discrimination