If his business is suffering right now, it's because the American appetite has changed - people either want decent food made with quality ingredients in a friendly higher-touch environment, or dollar value menu quick calories.
Much rather see crummy middle-ground fast food chains like Carl's/Hardees, Burger King, Wendy's go under and be replaced with better businesses that respect employee attention to quality and service than have them morph into automats. If fully automated dining becomes a category, I really doubt these lumbering grease factories will be the ones to dominate it anyhow