There are plenty of people who have no desire to be part of the quest for financial wealth, yet give full value to the social net. Raising children is valuable work. Caring for ill and infirm family and neighbors is valuable work. Organizing and participating in volunteer projects addressing community needs is valuable work. Providing education, art, cultural events is valuable work. Yet it is also legitimate to live, enjoy life as best one can, privately, without fanfare or public obligation. Humankind is so much better served by people pouring energy and intent into their passions than people grudgingly performing jobs out of obligation or desperation. If there is concern about less appetizing but necessary work being done, there are certainly ways to address this: What is unappetizing to some may be interesting or useful in some sense, psychology or other to others.
This is another advantage of a diverse population, when properly celebrated; Ways can be found to reward, show admiration for, or otherwise make more palatable such tasks; Ways can be found to give over as much as possible of these tasks to technological aid; We can figure out better ways to take care of the needs now served by such tasks. The best incentive, result and means of moving toward this expanded economic model is the unleashing and uplifting of the great gift of human creativity, along with a generally increased zest for life. It doesn't have to happen all at once. If we consciously make efforts in this direction, eventually the tipping point will be reached, the more rational paradigm will take hold. As the benefits become evident, that which is best in us will continue to move forward.