Agree with J&W 22 (surprise):
The market (and that is all shidduchim is, a market) will function as it is supposed to do. Supply and demand. If the Shaddchanim drop out, a new method will come up. Supply will match with demand & equalibrium will be reached.
At this point equalibrium has been reached. There is more of a market for boys (for whatever reason, AZ or not) than girls. Greasing the rails more with more money will not make a difference on a Macro level, but it (just like if you are rich & beautiful) will help on a Micro level.