While this sounds as an offensive move on Amazon’s part, customer return pickups are somewhat infrequent due to the cost of $7.99 per pickup. A pickup does make sense for larger items but the vast majority of returns come via dropoffs to Amazon Lockers, UPS Stores, Staples, Kohls or customers printing labels from home and shipping back directly to Amazon. Now if Amazon were to make those return pickups complementary as part of the customer deliveries, this would become a worry for UPS. However, the logistics make that quite difficult. As the returns are picked up from customers, they would need to be tagged and/or consolidated en route back to Amazon.
Bottom line: I just can’t see how this is a major impact to UPS at this time. If Amazon were to waive the $7.99 fee…it would be another story. I still however marvel at the size of Amazon Logistics in sheer volume which will soon surpass the USPS.