A taxpayer, as defined in § 67-4-2004, organized as a subsidiary and controlled by one (1) or more agricultural cooperative associations formed in accordance with the laws of this state shall not be considered as a taxpayer organized for profit and doing business in this state, or subject to a privilege tax levied by any law as a tax for the privilege of doing business for profit in this state. It is the legislative intent to exempt by this section subsidiary taxpayers controlled by agricultural cooperative associations, where any profits earned by a subsidiary taxpayer are paid over to or expended for the benefit of the agricultural cooperative association or associations, with the result that the activities carried on by subsidiary taxpayers eventually promote and benefit the agricultural interests of this state.