[martinidon]

These exchanges will have people sign up. For some it is the only way to get health care thanks to obamacare..... I would be willing to bet a lot of those signing up already had insurance and thanks to obamacare their employer or insurance carrier forced them into the exchanges.
The real matrix will be how many uninsured people actually sign up.

[Texas Fossil]

A large number of uninsured with preexisting conditions will, even at the high prices.

[BubbaBobTX]

Actually you can go directly to the insurance companies and purchase the same policies. You just would not be eligible for the subsidies on the front end.

[fhayek]

The people who will be forced to sign up were healthy, moderate income people who avoided health insurance previously. The poor always had health options, as did the rich. This is as per the Forbes article posted nearby. It is a classic ‘share the wealth’ program to designed to have those without health care subsidize those with low income who need health care. Of course, as with everything designed by the government, there will still be a massive shortfall.