Speaking with a former electronics dealer, now a part of a major manufacturer of pro and counsumer audio gear, he told me when he was a dealer the greatest obstacle he had to overcome were common carriers.
Not recessions, manf. price hikes, inflation, or seasonal activity. Carriers.
His experience and on site tours of two major Fed Ex hubs showed him that in two locations the cnveyor belts used to do the sorting of the incoming & outgoing parcels took 4 - 5 ft. drops in at least one place during the transition at both Northern hubs.
4 to 5 foot drops are remarkably large drops. If the package doesn't drop well and rolls or bounces off of the lower conveyor belt, yet again the package falls further onto the (I assume) concrete floor!
I doubt seriously that makers of very heavy gear package them well enough to sustain themselves without issues by dropping a few off their loading docks in testing their packing.
Those two hubs he noted as having visited were Ft Wayne, In, and Ann Arbor, Mi. There may well be others.
I know of one person who used UPS and UPS packing to transmit some item and it was damaged upon arrival at the recipients address. UPS denied the claim initially, indicating improper packing of the item as fault. The shipper pointed to the check box where he had paid additionally for UPS packing on his receipt.
UPS then, paid the claim.