That's because your "business account" is just a sales channel. You get discounts versus going to ups.com, but you won't get the discounts you get via label res

That's because your "business account" is just a sales channel. You get discounts versus going to ups.com, but you won't get the discounts you get via label resellers because your business really doesn't matter; but if they lost a volume shipper like ShipStation or Pirateship, they'd lose overall volume to Fedex USPS etc.