That doesn't make much sense to me. The purpose black friday sales for companies seems to be 1.) to drive customers to their store where they will also buy non

That doesn't make much sense to me. The purpose black friday sales for companies seems to be 1.) to drive customers to their store where they will also buy non-sale items and 2.) to build brand image and name recognition with potential customers. Neither of these objectives are met by selling to scalpers.