I think that just hits on a larger organizational problem that seems to be common to both national parties: A staggering amount of the services and resources that I would think the state/national party would build up and have on-hand, they simply don't appear to have. (To say nothing of the coordination they don't seem to have)

e.g. Obama wasn't building/running a DNC-wide system and sharing it with all the candidates. His campaign built it on their own, for their one race and now-built, all indications are that it's going to be wound-down or morphed into a citizen mobilization sort of effort to drive "call your congressman"-type efforts.

Maybe political campaigning laws prohibit massive transfers of 'property' like that. I don't know. But it doesn't even sound like the DNC is looking to build their own system to share with future candidates.

And perhaps political campaign laws prohibit the national party from transferring down that much assistance to local races. That, I also don't know. I don't even know if, say, the GOP could legally lock up a sweet bulk price for buying signage/buttons/tshirts/etc and act as cheaper-middleman for their candidates.

There seems to be a hard line between each campaign and the rest of the organization and that leaves each campaign is largely 'on their own' for anything other than maybe lining up endorsements or speaking dates to get friendly faces to show up for local campaign events.