Guys, I think we need to be thinking about a future in which most low skill jobs no longer exist.
For example, 90% of retail jobs. Read this:
https://arstechnica.com/information-technology/2017/04/how-amazon-go-probably-makes-just-walk-out-groceries-a-reality/2/
As well as 90% of driving jobs (AI vehicles). The majority of energy extraction jobs (oil, gas, coal). Most call center and customer service jobs (AI natural speech processing). Agriculture has already shed most of its jobs. Manufacturing as well. And so on.
The highly skilled will still have jobs - until their skills are obsolete. The owners of capital, as well. Probably there will be some "blue collar" jobs that remain too hard to automate - electricians and so on.
What happens when a US of 350 million only has employment for 50 million?