nokia did that to themselves, microsoft aquisition just prolonged its inevitable ends
Just like with Zune, it was not part of MS strategy and therefor dropped. You need to keep working on something like this for years to make it successful. Large companies though drop products that are not a huge success after two years, associated with such products is a career killer.
[Edit] I got the Lumia to decide as a CTO at that time if we would go into Windows phones or not. I asked for more Lumias and XBox (to show cross plattform eCommerce) from MS to evangelize inside the company, but was let hung dry. So we did not support Windows phones. They never went full in.
(Former Touch Diamond user here.)
Then again arm doesn't seem to be necessary when looking at AMDs APU offerings. It was just a decade of intel struggling with their fabs.
I think this is about company culture as a whole too, MS only know how to make software
this is same problem with google too, with pixel device is very underwhelming success given how many resource they have
the Board and Shareholder knew that it was sinking ships so it want cashout to Microsoft at least before its going to rubble
Also makes the choice for Microsoft, as opposed to anyone else, very understandable. The other choice that "worked" for cell phone companies was to be a Chinese company, with state subsidies amounting to zero, maybe even negative tax, no environmental regulations at all (my favorite whoopsie was an algae bloom that started inside China and reached 1/4th to 1/3rd the way from China to the US. It is terrifying to think about just how many fish, animals and plants must have suffocated when that happened), plus definitely using WAY cheaper labor, maybe even using slave labor.