Why ? how would that help them make more money ?
How would that help them make more money? Are you kidding me?
First of all, people are used to Android.. it's the standard for mobile OSs now and pretty much most people use it.. so it's familiar and tons of people now have Android phones, Android apps AND Android tablets.
Second, people have bought tons of apps and games and all kinds of things on Android and Nokia going Android would immediately give their users an amazing eco-system instead of a joke of an ecosystem Windows Phone has where Microsoft needs to beg companies to develop for. Hell they could even open their own app store to rival Google Play and developers who already built apps for Google Play could just publish them on Nokia's app store. So the app store could also be making them money and not Microsoft.
They could take the Android and integrate all their services instead of Google's by giving them a free OS that's been constantly developed off their own R&D really, and they could promote their own services on it.
In other words, it would SAVE them money, it would bring them gazillions of users (I sure would get Nokia phone like Lumia if it ran Android as Nokia makes overall great hardware) and they would be most likely at the top of the Android chain, quite possibly outdoing Samsung.
Right now, they are going nowhere but the Blackberry route and Microsoft has them by the balls thanks to their trojan horse Elop.
We all know that Microsoft would be fu**ed if Nokia dumped Windows Phone and went Android as the whole Windows Phone OS would be history since really nobody uses it as much as Nokia does. Any marketshare Windows Phone has (a joke as well) is thanks to Nokia. So Microsoft would rather see Nokia burn at this point than allow them to switch to Android. That's why they put Elop there.. to make sure that doesn't happen no matter how bad Microsoft is for Nokia.
I'm sure they put something in contracts too so Nokia is pretty much screwed.
When any money you might be making (even though you are in the red) is from a dumb phone that doesn't even run Windows Phone, I think even to the dumbest people it would become quickly obvious that there's something wrong with that someone running the company and the overall direction.
The bottom line is this.. Android gives them complete independence, Windows Phone is pushing them into complete dependence on Microsoft and eventually Microsoft will dominate what Nokia can and can't do. To any semi-informed person this is painfully obvious.