This story was updated to reflect news developments.

President Trump’s actions on Obamacare will accelerate a recent trend toward dividing the individual health insurance market between the healthy and those with chronic illness and between the wealthy and the poor.

The immediate elimination of cost-sharing-reduction subsidies will have a great impact. These subsidies lower the out-of-pocket expenses for individuals who earn between 100 percent and 250 percent of the federal poverty level. About seven million people qualified for C.S.R.s, according to the Kaiser Family Foundation.

Because of the uncertainty created by the White House’s previous wavering on C.S.R.s, many insurers had already increased premiums significantly. These non-subsidized individuals will be slammed with the full burden of those hiked premiums.

The move will further lower non-subsidized enrollment. Individuals who receive premium and C.S.R. subsidies will not see their costs changes. Instead, the federal government will pick up the significantly bigger tab for total subsidies.