There are lots of simple answers.
For example, the people thank the capitalists for their assistance in getting us here, then nationalize the assets of GM.
It would be much cheaper for us to run it on a cost coverage basis.
If you nationalize then you get rid of competition, which lowers the incentive for innovation and efficiency. Just tax the wealthy and the people who own the machines instead.
You're making the exact same (flawed) arguments communists & marxists were making after the industrial revolution.
Marxists also thought the industrial revolution (machines providing labour) + communism would free us to pursue other interests like arts and other leisure activities. This utopia didn't happen, turns out people just became greedy with consumerism and wanted more and more "stuff". So i predict when automation happens en masse people will just keep wanting more and more stuff (unfortunately).
If you don't learn from history you're doomed to repeat it.