Grapes get grown and harvested in other countries using automation and technology as substitutes for most of the labor. As far as I can tell, your insistence that it can only be done by breaking the law speaks to a lack of imagination and poor management. Australian wines are often better and often cheaper than their equivalent California products so I expect consumers would benefit from your industry being deprived of its illegal labor force. I have little sympathy for criminal behavior. Your assets should be seized and sold at auction to somebody who will obey the law.
Your right. But many crops aren't machine harvestable. Furthermore small operation cannot handle machine expense (read corporatization). There's a lot of waste in Austrailia's model too.
I find it interesting how anxious folks are to seize property on this site.
I assure you; I am within the letter of the law.