Shallow rendition of the blame game. Europe and Asia destroyed themselves in WWII, so we were left as the pre-eminent industrial power in the world. Unfortunately, we didn't maintain that position: other countries were a lot hungrier than we were. Inevitably other countries were going to make a comeback, but there's a lot of blame to go around for why we didn't put up more of a fight.
Whatever the sins of the boomers, they weren't really responsible for the corporate raider economy of the 80s and 90s. They were the generation coming up then, but the bosses were still older men who came of age in the 40s and 50s. The boomers only played subordinate roles until they filled their old bosses shoes.
Yes. they had it easy. The Reagan growth of the eighties didn't have to compete with India, China, and Russia of today.
The aftermath of WWII allowed us the competitive advantage. That is over, and the leveling of the playing field is obvious. New tech simply leaves expensive labor markets out of the loop.