I think it is a tougher question to answer than meets the eye.
The state gets registration money, so they know who owns what, in the case of an accident or such.
Part of that money (And I have no idea how much, I'm just assuming here) goes towards the clubs and associations for grooming and signing funds.
I also believe the money that comes from registrations and trail stickers and such are put into a pool, that are used for fund matching. Where does that fund matching come from? The time that the clubs and their volunteers put in to clear the trails, and put up the signs, and the time the drivers of the groomers are actually on the trail.
I know when I worked trails in past years, the "sponsoring" entity, a club, or a bar, would log your time, including all equiment used in this trail maintenance time, to submit to the state. I believe this is used to calculate how much "fund matching" the state kicks back, and helps determine what next years "fund matching" should be.
Now, I'm just guestimating this, based on what I have experience from working with clubs, and bar owners, before the season, during the season, and after the snow season.
I'm sure there is a lot more to it, that complicates it to the point of us questioning this every year.
Someone chime in here that actually sees the money coming and going......