Creating GitHub required both vision and a lot of hard work. Building Google required both vision and a lot of hard work. Yes, they use open source tools, but

Creating GitHub required both vision and a lot of hard work. Building Google required both vision and a lot of hard work. Yes, they use open source tools, but ultimately they built something people could get huge amounts of value from at a time when no one else was. If Linus was interested in turning git into cash, there are a variety of ways he could make that happen, but it doesn't seem like that's his goal.