Now you have me curious. I have no difficulty spreading my cash across a few accounts on as many institutions to be well within the FDIC insurance's limit; it'

Now you have me curious. I have no difficulty spreading my cash across a few accounts on as many institutions to be well within the FDIC insurance's limit; it's not that much ("few" might or might not be one). But how are well funded corporations supposed to do that? Clearly having the funds available as (bookkeeping) cash isn't ideal, but sometimes unavoidable, I suppose.