... taking the fruits of labor and replacing it with a market wage (the lowest possible wage) is theft ...
So, the premise underlying your conviction that it's stealing to pay market rate for labor is your conviction that the goods and services employers sell are "the fruits of labor".
Why do you believe they're the fruits of labor? To be precise, why do you believe they're the fruits of
only labor?
"Fruits" is a curious analogy. If the goods are olives, and the labor is a worker watering, weeding, pruning, picking, and so forth, would you call the olives the fruits of his labor? They're the fruits of the
olive tree. If you want to metaphorically call them the fruits of the olive tree
and the labor, that's a fair metaphor. But we shouldn't forget that it's a metaphor -- the olives are first and foremost the fruits of the tree. The metaphor that lets us extend the "fruits of" concept to the labor doesn't play favorites. By the same token, those olives are also the fruits of the soil, the fruits of the weather, the fruits of whoever decided that was a good place for an orchard, the fruits of the merchants who told him they'd buy olives, the fruits of the soldiers who deterred the Spartans from invading and cutting down the olive orchards, and any number of other contributors. Without any of those factors there wouldn't be any olives to pick. So the olives are the fruits of
all those things. What justifies your picking out
just one of those many factors, rhetorically dismissing the contribution of the rest of the factors, and calling the olives "the fruits of labor"?