If he is already making apple juice for sale, making hard cider for himself is nothing. If he isn't, the question is how much cider? If he wants to go pro, the equipment, process and legal angles change.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk