i dont know.. would wikipedia be biased? maybe by the "open"-thinking spirit thingy.
but you might just trust wikipedia statistics, since you can go look up from geeky tech things that we like to look up until to where a tv spot celibrity has been born.
I rub shoulders with a broad range of people & only 2 of them use a distro. Both members of the same family, that I put onto Linux roughly 5 years ago. (They are the only ones I ever would poke Linux at & it was due to the son being a really talented nerd who would very quickly learn to do all of the maintenance -> I don't do support anymore.)
From personal experience I don't think that Linux on the desktop is anywhere near 2%.
But what do I know, I'm only speaking from my small experiential, localised statistical sample.
I don't know what is happening in China, Russia & India. Linux stuff IS happening there.
When we start talking about statistics & we don't know what half of the worlds population is up to re. the statistical subject then we don't truly know what the genuine figures are.
How can we make an informed judgement when we don't know all of the facts?
AFAIK, Linux achieved dominance in the server space (whether or not it's a majority) a while ago, and has held onto that by virtue of being solid, stable, and economical. There's lots of places still running Windows Server, and there are still plenty of Microsoft-heads, but Linux has had a very solid rep as a server platform for a while and so that's had quite an effect.
When I think of "platform dominance" or "platform share" I generally think about installed desktop OSs, not server OSs, since server "head count" only really matters to groups which write and/or support server-specific products.
In that regard, Apple is still ahead of Linux, and unless they do really stupid things long enough, it's likely to remain well ahead of Linux for the foreseeable future.
As others have said on here, however, dominance is now starting to transition over to mobile devices, and in that area at least -- thanks to Google -- Linux is becoming the dominant platform.
@MisterGaribaldi: I agree with you as far as the Linux server space & its likely dominance in that realm is concerned, but I think the topic of this thread is basically in regards to the amount of Linux desktop penetration.
As I mentioned previously, we just don't know the numbers. Half of the world's population is dramatically increasing its use of desktop Linux, & they don't feed us (the Western public) data on the subject, that I'm aware of anyway.
If anyone does know where we can somewhat useful statistics on the subject there are certainly very many of us who are interested in perusing them.