Freight didn't steal our work, the are just a different segment of the trucking industry: LTL or "less than truckload". Basically it's mostly palletized shipments that don't fill a full trailer, so they are picked up and later consolidated so that they can arrive at their destination in a timely fashion (and at a competitive price), sometimes as quick as a dedicated full trailer load that just goes from point A to point B. UPS Freight competes with Fedex Freight, ABF, Conway, and Forward Air to name a few. You could make the argument that Hundredweight has been absorbed into UPSF but that was better suited to palletized shipments anyway (does anyone really miss 80 boxes of catalogs weighing 40lbs each all going to the same place?)
They have valid concerns about subcontracting opportunities in their CBA and UPS is notorious for using subcontractors. Part of the reason why there was little to no movement from Package to Feeders in the late 90's to 2006 was because of UPS's use of subcontactors. That also affects movement from P/T to Fulltime Package Drivers. We call them "shiny wheels" and it's a constant game to catch UPS using subcontractors so we can try to fight back by making them pay twice. Right now in our building there are roughly 30 sleeper team Premium runs, 60 drivers, for our various Amazon fullfillment centers being subcontracted through Werner & Covenant.
So even though you may not know it, subcontracting directly affects you.