I'm sympathetic to your arguments but I'm fairly sure that nationalizing Nokia would not have staved off the inevitable, though, selling it to MS certainly accelerated the fall.

I still have my trusty N-800 tough, and I expect it will last another decade but that phone was made well after the Nokia brand effectively ceased to exist and is more of a reboot than a successful pivot. Clearly I'm not the 'ideal consumer' but I'm also the exception, I don't know anybody around me except for my 90 year old uncle who still has one of these and even he's been eying a smartphone.