I grow regular food plants (chiles), and it's not that simple. You have germination, irrigation, fertilization, repotting, pest control, weeding, etc. If you just carelessly throw some seeds on the ground then they probably won't germinate or they'll get eaten by animals and you'll get nothing. If you forget to water them they'll die. You have to check them every day if you want them to grow reliably.
Making wine is as easy as buying a carton of grape juice, adding some dried yeast, and covering the top with some aluminum foil. It won't be good wine, but it will be recognizably wine. People living under prohibition would be happy with it. If you try growing chiles with that level of effort you'll get nothing edible.