Eventually, perhaps soon, automated mechanisms will meet or exceed his work. My opinion is the only avenue for such artisan work to survive indefinitely is to become a symbol of status. The only way to achieve that is to take the price into the high status range.
Yeah. I had the same thought you initially did, but interestingly, the correct price might not be double (letting the tailor make a more comfortable living), but rather something much higher that not only meets the tailor's needs, but additionally establishes the product as a super-luxury item, going for only the top of the top end of the market. Maybe doubling the price doesn't signal enough status and quality to differentiate it with similarly priced off the rack labels.The only way to achieve that is to take the price into the high status range.