Every year a few players become "free agents". So what are those who are not free?
The words may become archaic, but the actuality they represent -- the forms of property and contract -- are constants.
And slavery (as opposed to indenture) still is found. Outlawed in the US, sure. Still -- it's found here in illegal immigrant slave rings and it is still legal and widespread in Africa.
"The words may become archaic"
Yet the mindset behind them never changes.