I just found this article in the New York Times, and it was a really interesting read as an ABDL. In a nutshell, it turns out that there's a growing movement to donate diapers and distribute them to low-income families. One of the points the article raises is that day cares often don't accept children who come without a day's supply of diapers, and parents can't work if they can't get care for their children, so there's a bit of a chicken and egg problem: need money to buy diapers, need diapers to earn money.
I found a larger organization than the one mentioned in the article: The Diaper Bank. Wouldn't it be cool if ABDLs gave back to the community by donating diapers? What do you think?