Nokia now is just a guy with a fat (for now) wallet, no factories, no manufacturing abilities, to get back in business they would need huge investment (or to rely on indian/chinese manufacturers), might as well just slap a Nokia logo on generic android device to see if people still remember (which they will probably quickly learn to forget with chinese quality of produce and generic android with z-launcher stickied on top), R&D costs a lot (in a way, Jolla could help them with that, but risky, when you need to open/rebuy factories of your own to bring back european quality and margins are so low), safer bet to sell tires again (or stick to network services or whatevs, CEO who got there after all those gamblers can stay for a while with no risk this way)