Now that times are harder they should contribute disproportionately to get the economy back in shape.
For example, someone with many partners can contribute disproportionately to the spread of a sexually transmitted disease at a community level.
And as he waspishly noted, "If risk-making were a value-adding activity, Russian roulette players would contribute disproportionately to global welfare".
Researchers at the London School of Hygiene and Tropical Medicine calculate that obese people contribute disproportionately to greenhouse emissions because they consume more food energy and require more fuel to transport themselves.
Premium cabins contribute disproportionately to an airline's economic performance — both directly, through higher ticket prices, and indirectly, by solidifying relationships with big-budget customers who fly all the time.
They have benefitted from and abetted the extreme wealth gap; they have traditionally supported regressive Republican policies (and, more recently, backed Trump); and they live lives of opulence that contribute disproportionately to climate change.
"Cities have been perceived as the 'engines' of national economies and there is no reason to depart from that view," said the report, pointing to numerous examples, from the US to Kenya, where urban areas contribute disproportionately to national wealth.
Some might wonder if community service should be linked to vehicles with gas mileage so low that they contribute disproportionately to global warming — arguably the world's biggest community problem.
Regulation is needed in part because vehicles with poor fuel economy contribute disproportionately to global warming and the nation's reliance on imported oil, yet these problems affect all Americans, not just those buying the inefficient vehicles, the report says.
While the free spending of the affluent may not be of much comfort to people who are out of jobs or out of cash, the rich may contribute disproportionately to the overall economic recovery.
Japan ranks third in the number of visitors it sends to Hawaii, following the Western and Eastern United States mainland, but Japanese tourists are much more aggressive spenders and thus contribute disproportionately to the economy.
