The government can remain irrational for longer than we can remain alive.
The key thing is if the situation in the US will get worse faster or slower than the slow mentality shift that is required to considered poor people as disposable.
Something like a basic income could distribute money from all those industries at the same time to those who need it. It would solve the unemployment problem, or at least make it more bearable, and improve working conditions for these workers.
The hoe displaced farm workers. Machines replaces lots of farm workers.
Shipping containers destroyed the massive labor requirement and theft of the shipping industry. Several orders of magnitude of jobs destroyed.
People don't just wither and die; the efficiencies offered by technological change turn into new industries and higher quality of life for everyone. Would you really be better off if everyone had to farm or hunt their own food?
But hey, at least everyone would be employed.