So, if someone gives you an answer, you just re-define your question? Nice going on that. You want one example of a "finished product" that does this and pulls in boat loads of money? I have one word for you: Google.

No, I'm not saying to look it up. I'm talking about the company as a whole. They offer tons of services (some "beta", some not), and make tons of money doing so. Check their stock numbers if you don't believe me.

Oh... And all of their servers run this silly OpenSource operating system called Linux. They've also been on a push recently to move the few remaining internal hold outs running Windows over to Linux, citing security concerns. And you may have heard about their recent dip into the mobile world, writing a free OpenSource phone OS called Android.

You did say you wanted just one example right? Because people have already given you like a dozen, and still you're on here whining making a douche of yourself by bad mouthing things, satirizing, and adding qualifiers. Just saying. If you wanted 15 examples, that's fine. But don't ask for "just one" and then balk when people give it to you.

Reality is OpenSource can be pretty stable and worthwhile. It can even be polished and snazzy. Check out FireFox some time. There are plenty of crappy, unfinished, busted close-sourced bits of software and hardware out there too. (Want an old Divx-Streamer box or a Zune player with the now defunct WMV drm junk on it?) Does that mean closed source is useless?

But then why would I try to debate with someone who's clearly already compromised their own standing by continuing to be illogical after their "just one example" is given...