(1) "nothing would apply to those 55 or over" How is this relevant?
(2)" the plan would be optional even after that"
Healthier > 65's may be able to get insurance for a flat $$ amount. Not to mention the average cost of those who remain in traditional Medicare would increase.
Sick elders, or those with pre-existing conditions will never get insurance with a fixed sum voucher
Thus healthier elder leave the new "Medicare" leaving only the expensive patients....zippo, presto Medicare quickly folds. Great idea!