Usually indicates that the past year's share was negligible.
For example: Last year I had 1 cent (which I found on the road). Now I have $100 because I got a job. My growth since last year is 10000%.
This is a market that is still in its infancy, so any predictions of long-term domination are folly. 15 years ago, who would have thought that Microsoft would be successful in the games console market? Also, many people spoke of the impending demise of Nintendo, following the relatively poor performance of the N64 and Gamecube. Then came the Wii.
In today's world, where people have short attention spans, it is only the simplest of narratives that receive attention.
Nokia sold around 450 million units in 2010 worldwide. That's as much as Samsung+HTC+Motorola+RIM+iPhone sales all added together. So drop in smartphone marketshare doesn't mean Nokia are selling less.
But in a sense of "OS", Android is definitely the biggest now.
