"In a free market the consumer never has to engage in a transaction with any one company, so this point doesn't occur. A consumer only engages in beneficial exchanges.
Government of course can grant a monopoly, like it does to teacher's unions, and consumers get forced into dealing with a "firm" that no longer serves the consumer but serves itself."
Not quite sure where to start with this piece of wisdom. First of all, a union is not a monopoly. A monopoly is where only one firm controls the supply of a particular commodity, and education does not quality as a monopoly, given that there are private schools, charter schools, public schools, homeschooling, etc., not to mention competition between colleges and universities offering the same product.
Consumers deal with monopolies every day. Cable companies and power utilities are the two big ones. Where I live I am only served by one cable company, so if I want cable television, I need to go through Comcast, which is hardly what I would call a "beneficial exchange".