Hey Mike,
If you, or someone else, was paid a living wage to do it rather than trying to do it around another method of earning a living, alot more would get done. This is where money does come in. A national alliance would work if a grant paid the salary of an "Executive Director" whose job included rallying and supporting volunteers and affiliates, or if it paid for a "Policy Director" that lobbied elected officials and/or sued polluters, etc.
Look at Prairie Rivers Network, Sierra Club, Nature Conservancy, Duck Unlimited for example. Volunteers and board members are important but paid staff have time to see projects to conclusion. It doesn't hurt to dream does it?
Gregg