The indefatigable Horace Dediu points out on Asymco.com that although Apple's (aapl) iOS and Google's (goog) Android are less than two years old as platforms, together they have captured 50.2% of what he calls "the most competitive market technology market on the planet."
Below: The same data graphed as market share.
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Also on Fortune.com:
- Apple is still sucking most of the profit out of the mobile phone business
- The ebb and flow of Apple's cash
- Chart: Where Apple makes its money
[Follow Philip Elmer-DeWitt on Twitter @philiped]