Draco had left Hogwarts the year after Scorpius had been born. Severus potion had just been approved for general use and Draco saw a chance to corner the the market. He sought his godfather's permission to mass produce his potions for distribution to hospitals, clinics and apothecaries. Severus had agreed. It was a good way for him to control the quality of the potions people were taking and it gave Draco a nine-to-five job, so he could spend more time with his wife and son.