Salaries and Profits do account for GDP, but that doesnt meant that all salaries and all profits are divided equally.
There is concentration on both sides of that equation. Small businesses do not have the profits and margins big companies have.
You weren't specifying small businesses and even then I'd say you have to get super small, <20 employees for that effect to start making them equivalent.
I will concede that if every business was a small business, then unions likely would be unnecessary as the negotiating power is more equal
I didnt, i mean all business which includes small business.
Unions are a super-business organization, they affect both big and small business, and unions dont represent all workers.
If all workers were unionized, there would also be little point for unions.
If this were true, real salaries would have increased as the GDP increased. Instead they've been stagnant for over 30 years. You're argument is incredible and would need some sort of evidence to back it up against what is being observed in real life