FedEx delivered its bluntest message yet about its approach toward fast fashion and other low-cost parcel shippers at last week’s Investor Day event, doubling down on its shift in recent years toward more high-margin B2B logistics relationships and premium direct-to-consumer shipments. E-commerce sellers looking for cheap, no-frills home delivery: Goodbye. And B2C retailers with more specialized needs for high-quality shipping and reliability? Be ready to pay a larger premium and lots of surcharges. “Ou ...