The money these firms spend buys the socialisation of financial risk. The $700bn the government was looking for was just one of the public costs of its repeated failure to regulate. Even now the lobbying power of the banks has been making itself felt: on Saturday the Democrats watered down their demand that the money earned by executives of companies rescued by the government be capped. Campaign finance is the best investment a corporation can make. You give a million dollars to the right man and reap a billion dollars’ worth of state protection, tax breaks and subsidies. When the same thing happens in Africa we call it corruption.