Equal grounding would be that no one is in a union, or that the employees are in a union, and the companies are in a union of their own. So Amazon, Target, Walmart, etc all get to form their union to negotiate with Big Labour.

Its not fair that Walmart and Amazon must compete against each other to buy labor but the sellers of labor can form a cartel protected by the federal government.

I'm talking about things like the employer being able to put a mailbox at the place where employees exit, mailing things to their home addresses, putting posters on the walls at work, and so on.