Hahaha, this is like the classroom bit from The Meaning of Life ...
I listened to a pod the other day, they had some interesting perspective on this - they could've gone Warner Entertainment / Warner Brothers, but WB doesn't have much brand equity, we know HBO = movies and super high quality originals (Sopranos, GOT, etc.) Of course, they could have also gone further up the corporate ladder and used some kind of AT&T type branding, but everybody hates AT&T
Leaving HBO in the name provides decent brand recognition.
Otherwise, see video ...
Now, before I begin the lesson, will those of you who are playing in the match this afternoon move your clothes down onto the lower peg immediately after lunch, before you write your letter home, if you're not getting your hair cut, unless you've got a younger brother who is going out this weekend as the guest of another boy, in which case, collect his note before lunch, put it in your letter after you've had your hair cut, and make sure he moves your clothes down onto the lower peg for you.