Linux, of course, has nothing "to prove" anymore: it runs tens of millions of the world's cellular phones .. including mine. And, I would hazard to say, most of the Internet's burgeoning infrastructure.
The article brings out an interesting point, although it incorrectly cites it as "a problem" ... there is no 'single Linux®.' Instead, there's Android and Kindle and embedded systems and Lord-knows what else. All of them built "using" Linux.
"Linux," really, is "a pile of bricks ... in all sorts of shapes and sizes, but all of them the right size." And the reason why we know they're "the right size" is because someone with a job to get-done recognized the need for one .. and built it. The odds are exceptionally good that your "unique" requirement will be almost-like his, and if so, "there it is."
It's a tool kit, in other words, but it's also a critically important common ground. It allows multiple thousands of developers to pool their efforts against what they have in common. That's why it works.
Last edited by sundialsvcs; 07-31-2013 at 08:51 PM.