Health Insurance has always been out there for people that want it. It was never exclusive to the wealthy or the poor. It was easier for people who belong to a company to get it as it is a group plan.
Now the "common man" as Socrates has put it will be mandated to pay whether he wants to or not. And the IRS will ensure that he does.
The government will decide if you need subsidies or not. Unless you are working poor you are most likely going to have pay that full amount. What one considers a struggle with regards to income and what the government thinks are far apart. The common man is going to get a new shiny bill each month when this thing gets rolling and the IRS will ensure it gets paid.
That's what we do in Canada, except the monthly bill is paid in taxes on everything we do, a bit at a time.
It works out okay, we're doing fine.