So let's raid AHFC and AIDEA! !

(I'm being facetious).  Seems everyone is okay raiding couch cushions and mattresses so long as it's not the PFD mattress -- any stash of cash so long as I don't have to pay any taxes or suffer ill-effects of a raid on my PFD entitlement... 

I don't know about the study you're referencing but I suspect AHFC and AIDEA's "massive" cash holdings are doing something to promote a public good like making home loans more affordable/available or spurring some in-state business investment by making business loans more affordable/available...