I think that is a key point that always needs to be emphasized.
If you are (for example) a coal miner, you had to work hard, risk your health, take care of your family, pay for your housing, pay for your food, and worry that the work might disappear. A hard life.
If you were a slave, you had to work hard, but Master took care of you (valuable property) and provided housing, food, medical care and always had work for you. A demeaning life.
In a modern Welfare state, you don’t need to work, the government Master takes care of you (valuable votes) and provides housing, food, medical care and has very low expectations that you will make any contribution to society. A demeaning life.
If you were a slave, you had to work hard, but Master took care of you (valuable property) and provided housing, food, medical care and always had work for you.
You forgot to mention, like a horse or a cow, the master had the right to sell you, your mate or your offspring. Rights the mine owner did not have. AS a slave, you would know that your circumstances would never change, that your children and your grandchildren would remain some one elses property. As a miner, you had the right to quit and move West if you could see your way to do that. You could see and work for a future where your children and grandchildren would have a better life than you, maybe even own the mine. This was a luxury the well treated slave never had. His children’s fate was already determined, they would live and die as someone elses property.
So you suggesting that maybe the government should be able to sell you? Get some of their money back?