"Companies can not rebrand themselves it never works". Are you joking? Apple started out as solely a computer company. Bill Gates found a way to beat Steve Jobs out in the computer market with Microsoft, where Windows computers dominated over Macintosh
computers. The early 2000's saw the re-emergence of Apple with their Apple-OS computers. It didn't put them ahead, but it really closed the gap as Apple was just getting started on their big plans to run the gauntlet THAT STARTED WITH REBRANDING THEMSELVES!
They built better and better computers starting out, then the iPhone took the world by storm. It became 1 of the first 2 smart phones alongside Nokia to release the world's first 2 truly smartphones with full internet. Can you guess which one won the battle?
Apple did, And it started with what? You guessed it, REBRANDING THEMSELVES and continued to dominate from there. So, while it may look grim for Windows phone, they can recover if they know what they need to fix, how to rebrand it, and how to market it properly.
Score one for capitalism, and the fighting spirit to succeed in the face of adversity. It's not about if you get knocked down, it's about can you get back up and keep fighting? That's what winners do. Losers quit because they give up hope.