EMPLOYEE/USER-OWNED BUSINESSES ALREADY EXIST, THERE’S NO GOOD REASON TO FORCE EXISTING COMPANIES TO ADOPT THOSE STRUCTURES

Cooperative associations and mutual companies are business organizations that are owned by their own employees or customers (users).  There’s a good chance that you already participate in a mutual company through your insurance, as many insurance companies are mutual companies.
Since these types of business organizations already exist and are free to compete in the marketplace with investor-owned corporations, there is no compelling reason to force existing investor-owned corporations to give stock to their employees, or to force them to put employees on their boards of directors.  I’m not sure what the proponents of such measures think they would accomplish, but I am sure that one of the results would be to make companies that are forced to take those measures less profitable and less able to provide good compensation to their employees.