It's pretty explicable. Our entire economic system is based on the premise that we should off shore the production of things to other places who are willing to deal with the nitty gritty and get it done at a price Americans can afford and then we regulate and enforce wages that ensure that those activities are prohibitively onerous and expensive to be done in the USA. This is literally by design.

It's great for multiplying the amount of physical things everyone gets to consume as long as the quality of those things isn't taken into account. It's a disaster in the event we actually need to build any physical things for ourselves.

We've been able to pretend this isn't true for the last 40 years as we wore our existing infrastructure down into the ground. It is becoming more apparent now as we fail to rebuild to the state we were in 70 years ago.