As a follow-on to my previous post, I'd like to emphasize that groups like American Action Network and Crossroads GPS are not infrastructure in the ActBlue sense.
These groups are a means for very wealthy individuals–upon whom AAN and GPS depend to survive–to influence our electoral process through large undisclosed donations. Those donations aren't popular among the electorate, and the organizations themselves exist largely as a result of the Citizens United decision and the disarray of the RNC under Chairman Steele. It's a winning combination of dependence, insecurity and loathing: dependent on a small number people, founded in shifting legal ground, and widely loathed by the American people.
ActBlue is rooted in the least controversial aspect of campaign finance law: the ability of actual (not corporate) persons to give to campaigns. The sort of giving our platform enables is tremendously important to a community of donors over a million strong, and is exactly the sort of credential candidates like to burnish.