Because of their size and the fact that they’re directly involved/affected by the happenings they -should- get involved. however, if they lose site of the communities needs or only care for the needs of a few instead of the klal then people will turn on them and not follow their suggestions.
If there’s enough of a divide or they (hypothetically) alienate the people that are working so they start giving less to the local mosdos, it will change.*
*hypothetical example not saying thats the case.