That's a good point: those WITH money are a better target market than those WITHOUT money.
The only reason that fat fool and the 2 "Lies" books by the Klintons did well is because a few bucks for a movie is easy and institutional support for the ex-first-criminals.
Plus they probably had a lot of those "Friend Of Bill" Hollywood types buying them in lots and giving them away as a trendy gift. I doubt that many average Americans bought them.