" 'The ACA's premium subsidies work together with the individual mandate as incentives for even individuals in good health to obtain coverage,' said Academy Senior Health Fellow Cori Uccello. 'Had the court's majority decided differently, the federal-marketplace states would be facing significant disenrollment of those who cannot afford insurance without the subsidies, and the consequences of that could have threatened the viability of those markets. In the loss-of-subsidy scenario, adverse selection would have been a serious concern, as relatively higher-cost individuals would have retained coverage, increasing average costs and premiums.' "