Nokia transitions Symbian source to non-open license (ars technica)

I'm sure MS are very afraid of Android eating up the non-Apple smartphone market. But remember how this happened - the Nokia board chose an ex-MS executive to be their CEO and he did what everyone was expecting of him. Effectively, Nokia chose MS, not the other way around.

As to exactly why the Nokia board chose the ex-Microsoftie is not clear yet. Perhaps their rapidly dwindling market share scared them into thinking they needed to make a drastic change.