I think the root problem with how the US currently spends its tax dollars is the above "vote with your wallet" belief in the first place. "Vote with your wallet" implies that the rich deserve more votes. That's not (representative) democracy, that is oligarchy. Right now the US has two political parties that are both "vote with your wallet parties". They both act like they are bake sales that constantly need everyone's $20 bills just to "survive", but as much as anything they are trying to make US citizens complicit in agreeing that the rich deserve more votes and should control more US policy.
I think the only real solution to a lot of US ills is drastic Campaign Finance Reform.