That there is voting power attached to shares?
If you're so committed to this notion of worker co-ops, and supposedly you are so because it's supposedly the best way to run the world: why do you not better understand these simple things about how the real world is actually structured?
Furthermore, I'm not sure if you're aware, but many of the most highly employee-owned corporations in the world are investment banks. Are you saying that if Goldman Sachs is >50% owned by employees, then it would be a socialist corporation? What if it is 49% owned by current employees, and 2% owned by former employees? Does that make it still a socialist enterprise? In case you're not getting the drift: I'm telling you that, in real world terms, your idea is bunk.