Apple's done it
If it were not for the Apple hype and Android hoopla, Nokia wouldnt have bothered!
Also, lets face it, Apple have raised the bar wth its UI very high. Its a breeze to use. (who cares whats inside?) Mobiles have become a way of life everywhere and consumers would just choose the best looks, usability, price, battery life, and reliability.(not necessarily in that order). There was a time for it (Symbian) and Nokia thinks its too much in the general domain to hold it close to chest.
As an example, I can think of IBM trying to hold on to its proprietary hardwares (Monopoly) in the 80's, till "IBM compatibles" came along. Look who stuffed them. Compaq & Dell and M$oft and Sun.
Way to go Nokia. They've seen the light now, earlier.
Cant help thinking Apples done it this time.