"What Public Option Supporters Won"

It's hard to know, but I think most of what Jonathan Cohn writes here is probably true.

The campaign for the public option pushed the entire debate to the left--and, to use a military metaphor, it diverted enemy fire away from the rest of the bill. If Lieberman and his allies didn't have the public option to attack, they would have tried to gut the subsidies, the exchanges, or some other key element. They would have hacked away at the bill, until it left more people uninsured and more people under-insured. The public option is the reason that didn't happen.