Imagine Downton Abbey with beige carpets and fluorescent lighting and that's most British companies today. Except it's not blue-blooded aristos running the show, it's old boys, school ties, golf buddies, MBAs. Contrary to popular belief the old boys network isn't actually sexist: it discriminates equally against male non-members too.
Same in out politics too actually. Might not be Lord-this or Lady-that running the show, but they all graduated in PPE from Oxford...