Four years ago that would be true, but today lines are starting to blur. Very few of the customers I worked with was concerned weather it was windows or not, they were concerned at the fact they could not do what it was they were trying to do with there computer. The same old people you talk about will not so much ask if windows is on it, they will look at the computer screen and say, "Gosh it looks just like my one at home! I know how to use this." . They wont care if it Windows, Google, Linux, or fuzzy wuzzles. All that will matter to them is that they know how to use it, and thanks to all the other operating systems out there that are looking more and more like each other that line will blur more and more.