Chill yo tats mate, even assuming your theories are true, which i doubt, Kagura is an official TLer.
They don't need any permissions from anyone except the developers themselves, which they get, unlike your fan translators.
To begin with, most of those fan translators are nowhere near Kagura level in the first place, so "yoinking" their TL would be counter-productive.
Fan TLers hold no rights, they just went and TL'd without asking anyone if they could, therefore even if someone took "their" stuff they can't complain. Thinking that Kagura should be asking a fan TLer for permission or anything is just retarded.
If those fan TLers are as good as you seem to imply, and they really like TLing oh-so-much, they could just go and seek work at Kagura, they're recruiting right now last time i heard. Gonna get paid on top of doing what you like.