Fortunately, I guess, I've never met Mr. P himself, just his mostly-excellent teachers. The younger ones are the most market-oriented. Many of them, I suspect, take up his course the same way you'd study Business or Economics in college: aiming at becoming CEO of a bank.
I've also watched a few "unknown" NH teachers. And guess what, they all bragged about themselves in the same way, and while they may not have special halters (I imagine it takes funds to start your own line of equipment) they all had special CD's on sale; and cameras were not allowed during their presentations. At least the Parelli clinics I attended allowed cameras. I was able to get video clips for my friends.