1. They have more money too, they can afford to take risks 2. They probably already have a patent agreement in place with FB not to sue each other 3. It's perfe

1. They have more money too, they can afford to take risks 2. They probably already have a patent agreement in place with FB not to sue each other 3. It's perfectly possible nobody in MS has had this actually cleared with their legal team. You can't assume they have.