I hate to say this...but I don't think Nokia can survive without making an Android phone.
A lot of people say this, but the truth is, if Nokia makes an Android phone, you will know it is the beginning of the end for them.
First of all, there is nowhere near enough room for Nokia in the crowded field of Android handset makers. Second, there is virtually no way to differentiate your product if you did, aside from yet another horrid OEM UI skin which gets in the way of OS updates. Third, there is very little profit in being an Android handset maker unless you have some hot, high end product. Most of the Android field is in a race to the bottom to see who can build the cheapest, crappiest Android phone with the most features for the money, i.e. loss leaders.
The bottom line is, there is nothing in it for Nokia. They would never be able to gain any significant marketshare against Samsung, HTC and Motorola.
If Nokia was ever going to go to Android, the time to do it would have been 3 or 4 years ago. Back then, Nokia could have had a shot at it with nice hardware and some kind of Nokia UI skin over Android. The opportunity has passed and honestly, I'm glad they let it because I like Nokia, but if Nokia had gone to Android, I'd probably be using an iPhone right now.
I think Nokia's former head of smartphones, Anssi Vanjoki, said it best. "Nokia going to Android would be like peeing in your pants for warmth in the winter."
In other words, the temporary "relief" would be quickly followed by worse consequences. If Nokia went to Android, it would be the beginning of the end, they would wind up being an also-ran and slowly sink and decline under the pressure from the Asian Android army who would always undercut them on price, steal their ideas and copy their designs relentlessly until no one even recognized the shell of a company that used to be Nokia.
At least with Windows Phone, Nokia has some chance to control their own destiny. They have a platform, which while NIH (Not Invented Here) is at least well-differentiated from the thousands of look-a-like Android crap phones on the market. Windows Phone 8 helps Nokia's phones stand out against the competition, which more than anything is the iPhone and other Android phones, not their fellow Windows Phones.
Nokia is good for Windows Phone because their unique design language is getting the platform attention it never would have had otherwise, and Windows Phone is good for Nokia because it gave them a next generation alternative platform, that unlike Symbian and Meego, actually has a good chance of survival.
Nokia still
might not make it in the end, but I firmly believe there is solid reasoning to support why going with Windows Phone gave them their best possible chance. Android would have sank them and sticking to Meego and Symbian would have gotten them nowhere.