(leaving poor girls more behind than before)
Maybe not equally attended to as those who put up the money, but in the scheme of things, they should still get more attention than before, because the overall focus will shift more towards the older girls.
Although money is a good motivator, I believe that most shadchanim are well meaning, and once their attention is placed on finding shidduchim for older girls, even the ones whose names are not on the list will be thought of.