Without private property, you'd be subsistence farming and fighting off anyone stronger than you that wanted your land (since it wouldn't be privately owned).
How is labor being misappropriated if it's creating productivity?
"Humans have never made a single new thing, at least as far as I know. "
You're typing this on a phone or computer connected to the internet.
"The purchasing of people for labor has long been out of style"
What is the alternative to this that you think is in style?
The phone I (could) be typing this on, was made out of the earth, not from anything humans created. Anything with value is land that had labor applied to it.
The alternative to purchasing people for labor has been wages, which is giving back to a laborer the portion of their labor which is not stolen from them.
How is labor being misappropriated if it's creating productivity?
"Humans have never made a single new thing, at least as far as I know. "
You're typing this on a phone or computer connected to the internet.
"The purchasing of people for labor has long been out of style"
What is the alternative to this that you think is in style?