Linux is not in the public domain. Linux is a cancer that attaches itself in an intellectual property sense to everything it touches. That's the way that the license works.
Bio: Chip Conley is an American hotelier, hospitality entrepreneur, author, and speaker. Conley is the founder of Joie de Vivre Hospitality, which he began in 1987 at age 26 and held the position of CEO for nearly 24 years.