Why don't you own what you produce? Because you signed a voluntary employment contract that states you won't own what is produced. Perhaps you shouldn't have signed it if you didn't want that outcome. You can't be forgiven for renegging on your voluntary agreement.
By "mixes" I meant: if I own an unimproved resource and I improve it by working on it, I've made it more valuable to others and I can trade it with those who want it. And they'll pay a price for the improved product that reflects the work I put in to improve it. If instead of Me working on it, I offered someone else a wage (they agreed to) to improve it, the situation is no different. Except maybe I have to sell it for a little more to account for the wages I paid.
Nobody in that situation has been "enslvaved" - all of those agreements, from wages to final trade, were voluntary.
Just because someone doesn't have access to some imagined better situation doesn't mean they were enslaved against their will (where they "could have had otherwise if not for being forced) into their current reality. I don't have access to a flying car. Is my current car enlsaving me to the ground without my consent? No, it's simply not an option for me to have a flying car. Hopefully my children will have that option, but I don't. Shall I forceably coerce others with the ultimate (unobtainable) goal of providing me with flight? Is that reasonable of me or even in my own best interests?