Every time you enter a grant competition you're competing with everybody else—Alzheimer's researchers, Parkinson's researchers—so, unsurprisingly, the grant funding authority often opts for where they'll get the most for their money.
Every time you enter a grant competition you're competing with everybody else (a host/all other researchers)—Alzheimer's researchers, Parkinson's researchers—so, unsurprisingly,(it is not surprising that) the grant funding authority often opts for where(the research) they'll get the most for their money.