Bull. Look at the average blokes in the shops. They don't need 200'000 apps. They want a nice UI and good basic apps. Many people I know realised they don't need many apps on their android devices, just the basics.

So Nokia would have been able to keep their market share with something better than symbian.

And especially something uniquely Nokia, that is how you keep customers. Actually its the reason why nokia until now still sold more symbian devices than all others android devices.
It is also how apple survived in times of crisis.