Nokia doesn't need to "build and support an alternative OS just for enthusiasts", they just need to give some support to the Halium project [1].
[0] https://ubports.com/
[1] https://halium.org/
It doesn't require big efforts, just a bit of sanity choosing components and perhaps mainlining drivers.
Nokia doesn't need to "build and support an alternative OS just for enthusiasts", they just need to give some support to the Halium project [1].
[0] https://ubports.com/
[1] https://halium.org/