Watchtower Farms for Money???

Do Jehovah’s Witnesses honestly believe that the Watchtower Farms is strictly to feed Bethelites? That Watchtower receive no benefit and does this out of the goodness of their hearts? Thanks to a dear source that sent us the following documents. 2012-WT-Farm-Commodity-Funds- 2014-WT-Tax-Return- 2013-WT-Tax-Return- 2012-WT-Tax-Return- 2011-WT-Tax-Return- http://farm.ewg.org/persondetail.php?custnumber=A00359922