I honestly can't see how you can blame the Teamsters for the demise of the unionized LTL trucking industry. Bare with me since I can only speak first hand for the northeastern region of the US. Before deregulation in 1980 just about all LTL carriers in the NE & Mid Atlantic regions had some type of union contract. Non union companies like Overnite and smaller regional carriers like the now powerful and highly profitable Old Dominion would never dare to move northward for fear of being organized. Every company had there profitable lanes and all was well for the properly managed union and non union companies..... I remember my boss saying that he didn't care how much he had to pay us as long as his competitors had to pay their employees the same.
Sure some went bankrupt but it was definitely due to mismanagement. Those companies were given relief from their contacts by the union and ESOPs but it never seemed to be enough. Corporate greed and gross mismanagement were the cause of their demise. After the deregulation act of 1980 it was common knowledge on the street that there would only be 3 or 4 major carriers that would survive. Then came the buying spree. TNT dumps Pilot and buys 5 profitable regional carriers, Holland, Reddaway Bestway Red Star, and Dugan. CF guts Consolidated Freightways and creates Conway. the profitable Maislin buys longhaul Gateway and then goes belly up. Roadway Services spun off it profitable debt free Roadway express who was later gobbled up, along with New Penn and USF ( formerly TNT), by the greedy Zollar's Yellow corp
Meanwhile the nonunion companies like FedEx, Conway, Estes, Old Dominion, and R&l ventured north and east into the weakened union strongholds with their substandard wages and work rules. If the Teamsters are guilty of anything it would be IMO that they saw the writing on the wall and didn't try to keep us competitive with the growing non union companies. Hoffa considered us as expendable dinosaurs and threw the remaining NMFA carriers under the bus. That's why Hoffa gave UPSF/Overnite a stand alone contract tailored to it's needs to remain competitive and highly profitable. But at the same time YRC, by it's own greed and mismanagement, was willing to sign any contract that was presented to them. And the IBT forced ABF into accepting it.
The fact that Teamster companies no longer set the standard in the LTL industry is a product of deregulation corporate greed, mismanagement and the Hoffa administration's not doing its job of educating the NMFATeamsters on the realities of our changing industry