So if I am reading this correctly, does this mean that this judge has officially slotted OS X as a competitor for other operating systems, including Windows? If so, doesn't this blow any current and future suits concerning Microsoft monopolies out the ... window? (sorry for the unintentional bad pun)
yes and no. yes in that the courts have recognized that the Mac OS is just yet another operating system, like Windows, like Linux and so on. And that any company has the right to restrict hardware, especially when the company is up front about the restrictions.
No in that the claims against Microsoft, at least in the past, haven't been about the operating system but in using the market strength of the operating system to force unrelated software on folks. the courts in the best known case determined that a web browser is not the same as the operating system so restricting companies that were licensed to pre-install Windows to also installing Internet Explorer was wrong. So if Microsoft tries that stunt again they will get dinged on it. By the same token if Apple didn't allow folks to install firefox, office for mac etc and forced the use of only safari, iwork etc, they would be dinged.