For Britain's best source of soft power to survive, and indeed to thrive, it first needs to rediscover what it is actually for, writes Sean O'Grady L ike everyone else in this country, whether they realise it or not, my life would be immeasurably immiserated if the BBC fails to survive . That seems an odd thing to say when fewer people, broadly, are watching and listening to its output, and it has more powerful competition from online than ever for our attention, but there’s no doubt that as a