From the AP:
The alternative to government-sold health care, a proposal for nonprofit co-ops that would compete with private companies, was judged largely ineffective by budget officials. Such arrangements "seem unlikely to establish a significant medical presence in many areas of the country," they wrote.
They said the same thing in an earlier markup, I think, and for obvious reasons -- state-level coops really are a stupid idea. The only potential utility in such a proposal was to win over a single Senator, Snowe, and it may not even achieve that.