What people need to understand is NO ONE can compete with the Samsung Group. Literally everything is done in-house for Samsung. They don't have to order screens, they don't have to order processors, they don't have to order ram, they don't have to order shells, they don't have to order boards, they don't have to order anything.
Every other phone company must order something. Samsung doesn't.
Yes Windows Phone would've been royally screwed without Nokia. Thing is, Nokia would've been royally screwed without Microsoft. Microsoft still pays Nokia Billions to produce this stuff.