A key reason I started this blog was to help myself keep abreast of, and communicate about, disruptive technological change. In that vein, Horace Dediu has quantified something amazing, writing:
If we include all iOS and Android devices the “computing” market in Q3 2008 was 92 million units of which Windows was 90%, whereas in Q3 2013 it was 269 million units of which Windows was 32%.
Today as Microsoft announced its new CEO, John Gruber published a fascinating look at Microsoft, Past and Future. I highly recommend it.