Is the close reason that says a question needs more focused always only used for questions that need more focus? Or is it sometimes used when no other close reason fits? Are some questions that are closed requiring more focus actually never going to be opened no matter how focused the question gets?
I do not believe it is being used as a catch all close reason on this site.
Your secondary question about re-opening is also quite hard to definitively answer, because it will depend on the circumstances of each one.
There's no conspiracy against certain questions or people here, but yes, some questions may not attract enough re-open votes no matter how focused they get. I guess that really depends on how interesting they are as much as anything.