> What makes you think the firm would allow clients to advertise its name or advice in any way? You've got it backwards. McKinsey itself doesn't disclose their

> What makes you think the firm would allow clients to advertise its name or advice in any way? You've got it backwards. McKinsey itself doesn't disclose their clients or their advice, but their clients are, AFAIK, under no such obligation. More to the point, it's not so much about broadcasting to the rest of the world, it's about giving cover internally within a huge enterpise that "hey, we're just following McKinsey's advice", and certainly nearly everyone internally knows that McKinsey is involved.