You're aware that firms voluntarily sign contracts with unions, correct? You are also misrepresenting the power imbalance a single worker who needs to eat has

You're aware that firms voluntarily sign contracts with unions, correct? You are also misrepresenting the power imbalance a single worker who needs to eat has against a multibillion dollar company or industry. Unions try to correct the power imbalance between labor and capital. Edit: was beaten by a more elegant response 15min ago.