In my experience these sort of guys (succesful businessmen typically in their 40's) generally start of doing their PPL ok and typically treat the instructor with sufficient respect but as their skills improve they gradually start to treat you like one of their employees, and by the time they have the licence they often treat you like some sort of paid serf with nothing to offer them.
They are generally nice guys but could also be described as "pushy sods" and often seem to lack the natural conservatism present in good PPL's from other backgrounds. And the gazelle seems to attract people with this profile.
Not saying all this is true, just my experience
