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: Joseph Philippe Pierre Yves Elliott Trudeau was a Canadian politician. He was Prime Minister of Canada from April 20, 1968 to June 4, 1979, and again from March 3, 1980 to June 30, 1984. His eldest son is, a teacher and politician.