It's something any operating system vendor has to have.

In television you go in with this operating system that it is a crapshoot.

There is no neat distinction between operating system software and the software that runs on top of it.

breaks the operating system spectacularly.

The definition of an 'operating system' is bound to evolve with customer demands and technological possibilities.

In essence, Chrome OS is the GNU/Linux operating system. However, it is delivered without the usual applications, and rigged up to impede and discourage installing applications.