I do not suspect so. People are used to getting Windows bundled with their computers. If those people suddenly have to start paying for Windows, they would get annoyed and start digging deeper for free alternatives. Eventually they would find Ubuntu and that would begin to hurt Microsoft's business.
Doubtful. The average Joe isn't going to install Linux unless someone turns them on to it. They would be far, far more likely to buy a Mac instead if they get that sick of Windows.