Are they? Do you have a link to any stats or data that supports this?
--> I was talking about my country and here iPhone has no marketshare, most of people had symbian or S40, pretty much Nokia dominated and so I can claim it firmly that most of WP users are converted symbian users.
I think you can surmise from the reaction you have gotten to your request for a file manager that not everyone is seeking 'those basic features', as you have defined them. For you it would seem a file manager is essential on a phone. For others it may well be insignificant.
--> Insignificant ?? If it's significant for some which restrain them to buy then why don't we have it, people considering insignificant won't use it.
I agree with you here. The only caveat is that the definition of 'basic features' is a very individual thing, particularly on a 'smart' phone, which by definition is a wildly powerful device that can have thousands of features, each of varying relevance to different people.
--> True.
iOS' restrictions are both its strength and its weakness, as is Android's lack of restrictions. If freedom is very much necessary then Android is the OS of choice. The downsides, however, are obvious if you poke around the Android forums for a while. So getting the balance right between freedom and restriction can be a tricky thing, and as someone more famous than I once said "you can't please all of the people all of the time". You are quite wrong, though, when you say MS is not paying much attention to WP. Indeed the success of WP is one of the pillars that MS is staking its future on and there's been a massive amount of resources being directed at WP. We can argue whether they are putting those resources in the right place, but WP is certainly have attention lavished on it by Microsoft at the moment. Obviously they aren't putting the resources where you would like.
I pretty much observe android, too. I just got my Nexus 4 IN india from canada. And I believe if you want to use android, Nexus is the best device. Other plastic craps are underpowered with outdated GB or overpriced while WP gives same experience on all devices. And MS is the largest software maker in the world still it cannot give you full featured OS in time, that's ridiculous. I remember after launching WP8, one of its engineer made a statement that they wanted to add notification center but ran out of time, now it's almost 6+ months and no sign of it in GDR 2.
And you accept it or not, Nokia is the responsible for WP's current state. If nokia wouldn't be there,WP would be in limbo. That's the truth. Here nobody knows about WP but people know about Lumia.
Bottom line is, Microsoft has not put a traditional 'file manager' into WP for a reason and there's been no indication that it feels it necessary to change that. The lack of any file management capabilities certainly leaves particular capability holes in a number of areas (attaching files to emails being one). I think that MS will address some of those holes in various updates as the OS matures. But as others have alluded to, this might not be via a traditional file manager program.