It was actually, but that was an aberration of the post-war period.
It may have been good (for the US), but that definitely doesn’t make it normal, and unfortunately I don’t see how such a situation occurs again without similar circumstances. I’d love to be wrong, though.
The same things were enjoyed by workers in most of Western Europe and even Japan post-war.
The current population decline crisis will likely shift the pendulum towards labor in 50 years or so.