Therefore, creativity and novelty are no longer the possession of the active agent but are the possession of the capitalist.
Because that is what reality teaches.
There is a well-known joke about this. A guy is walking along and he observes two men working. One man is digging holes, and the other man is filling them in. The passer-by asks "Why are you wasting your time and energy digging holes and filling them up again?" One of the workers replies "We're just doing our jobs. The guy who puts the trees in the holes called in sick."
ALL of the value of labor resides in some intelligence organizing it. Undirected labor is entropy. Directed labor creates value by reducing entropy. The value is created by the intelligence that hired all three workers, caused them to be in the same place at the same time, and provided them with trees to plant and someone to pay for the planting. Absent any of those things, there is no value. None. Of any sort. The workers are like the trees, because their intelligence adds nothing to the value.
I exaggerate for effect. All workers have some minimal skill, but we can ignore it the way we ignore friction in thought experiments about momentum. As we move into the area of genuinely skilled work, however, we find value, because the holder of the skill has invested in perfecting it. The skilled worker is a capitalist who has invested in turning himself into someone capable of organizing labor, albeit it his own. Professional athletes are a great example. They sell their labor, but they get a ton of money for it. Yes, they had to unionize, but that was just a way for them to realize the value they add. The value was there because they had invested in their abilities. No one is exploiting Tom Brady.
The capitalist model works because it rewards the thing that adds value most: the organization of labor to effective use. The labor is essential the way air to breathe is essential. But the value is in the skill, whether the skill of the skilled worker or the skill of the entrepreneurial organizer.
In short, the labor theory of value is just plain wrong. Why people spend so much time trying to understand it is beyond me.