Running out of time

When looking at the opening struggles of the Obamacare exchanges, supporters cling to some tall tales.
Megan McArdle sees time running out quickly.
Ultimately, Obamacare will only be economically and fiscally sustainable if it can also get the rest of the uninsured to join the ranks of the insured. Almost all of the reporting has focused on people who have found it hard to get insurance in the past. But the health of the program ultimately depends on roping in people who could easily buy insurance right now -- but haven’t bothered, for one reason or another.