Any job...it doesn't have to be a dream job or even a job in your established career path. It just has to earn you enough money that you can pay your share of the bills.
I might only wonder what for people like Francois Pinault, Damien Hirst, Larry Gagosian, Charles Saatchi, Glenn Lowry, Oscar Murillo and co. need more money from the artworld. They already have more than enough paper bills to eat hundred dollar banknotes in the form of a salad every day instead of food for thousand years. They care even less about how could they survive this thousand years.