I dont see it being bad business. Nokia picked WP7 over Android as there are too many big names using Android and HTC and Samsung own Android with the amount of devices they sell. Where WP7 is a new OS and has yet to have anyone take over as the lead phones.

Plus WP7 will be a big player in the next 24 months as it is the most stable OS on the market and also looks different to Android and IOS which look the same in terms of icons ect.

Plus MS are a power house in pushing software and with the changes MS are now making as a company with the metro UI it will only help people notice WP7 and with Nokias designs of Phones it will give WP7 the cool phone it is missing at the moment in terms of looks.

But to count Nokia out now because they have picked WP7 over android is daft looks at SE they have lost massive ground to HTC and Samsung with Android as it is a crowded market WP7 is not so it is the right move for them and also for MS.

why cater to a smaller, yet to be successful OS compared to a more established OS which has a wider audience? don't you think people will be interested in Nokia if they offer Android phones now? despite their recent slump, Nokia is still a very respected names in cell phones market and has very strong market share before! the reason for their slump at the moment is because people are looking for smartphones and Nokia is just isn't offering any model decent enough to compete with Android phones and iPhones!