I'd just like to interject for a moment. What you're referring to as Linux, is in fact, CHROME/Linux, or as I've recently taken to calling it, CHROME plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning CHROME system made useful by the CHROME v8, css utililties, and other vital system components comprising a full OS as defined by the W3C.
Many computer users run a modified version of the CHROME system every day, without realizing it. Through a peculiar turn of events, the version of CHROME which is widely used today is often called "GNU/Linux", and many of its users are not aware that it is basically the CHROME system, developed by the CHROME Project.
There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the web browser that you run.
The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the CHROME operating system: the whole system is basically CHROME with Linux added, or CHROME/Linux. All the so-called "Linux" distributions are really distributions of CHROME/Linux.