Of the JWs I've met, a portion of them that is vastly beyond the perportions of normal people are in MLM. Noni juice (snake oil scam), Herbalife (overpriced vitamins), World Book (back when encyclopedias mattered), Pre-Paid Legal (which is a joke), phone card pyramids, etc. These people aren't qualified or equipped to make money any other way, so they look for some get-rich-quick scheme. Stupid people are suckers and JWs are notorious for being stupid, ignorant, and desperately broke. Meanwhile they have these idealistic fantasies of how they'd "donate half to the Society and pioneer until Armageddon" if they struck it rich.
On the rare occasions a JW actually does become financially successful, the last thing on their minds is pioneering. Suddenly they discover the feeling of fulfillment by achieving. This is far better than the fake achievement of getting a pat on the back from losers in cheap suits, fake titles, positions of responsibility and mock authority, big numbers on a time sheet turned in to people you'll never meet, etc. Seeing a tangible result of your work quickly pushes the silly pipe dreams out of the way and the bar gets raised of what makes us happy and fulfilled.