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: Satya Narayan Goenka, commonly known as S.N. Goenka, was a Burmese-Indian teacher of Vipassanā meditation. Born in Burma to a rich Indian family, he moved to India in 1969 and started teaching meditation.