No action taken by the commission nor by any individual in accordance with this chapter or with the rules and regulations adopted under the chapter is a violation of the so-called Cartwright Act (Chapter 2 (commencing with Section 16700) of Part 2 of Division 7 of the Business and Professions Code), the Fair Trade Act (Chapter 3 (commencing with Section 16900) of that Part 2), the Unfair Practices Act (Chapter 4 (commencing with Section 17000) of that Part 2), or any statutory or common law against monopolies or combinations in restraint of trade. Proof that any action complained of was done in compliance with this chapter shall be a complete defense to the action or proceeding.