"Will Anyone Even Insure Seniors if Paul Ryan's Medicare Plan Passes?"

Asks Benjy Sarlin:

Unlike the Affordable Care Act, which mandated that millions of young and healthy Americans purchase insurance with government subsidies, the Paul Ryan plan would instead bring the oldest, sickest, and least profitable demographic to the table. And with the CBO projecting that the average senior would be on the hook for over two-thirds of their health care costs within just 10 years of the plan's adoption -- a proportion that is projected to worsen in the long run --- the government subsidies backing them up may not bring in enough profitable customers to make things worthwhile.

Yeah. I don't get it.