“Others” is a convenient category to put things in when stuff you don’t care about happens. GNU/Linux is something I care about but not Gartner. They lump GNU/Linux in with all that other stuff that’s not from M$, Apple, or Google but, hey, I can subtract.
Let’s do some maths. Usually “Others” is tiny. The biggest, “Others” I’ve seen is about 40% of PCs being shipped by other than the big five OEMs. Gartner has tabulated all the PCs of every kind shipped last year, this year and next year and “Others” in the emerging markets is huge, 520 million units this year. That’s in the operating system category. That’s more than the total number of legacy PCs. Smartphones are the biggest category. In Africa, for instance, according to StatCounter, “Series 40” smartphones make up about 10% of page-views. Even on StatCounter, “others” is huge, about 12%. Series 40s phones are being dumped there according to one commentator, but that’s a huge number of units… Did Nokia really stockpile that many? According to Wikipedia, BlackBerry still ships a few million and left a few million as “others”. On the other hand, 520 million units is nearly 20% of all devices shipped globally… Conveniently not listing their OS is a little too convenient if you ask me. I’d like to know how many are GNU/Linux.