SACRAMENTO — When then-Gov. Arnold Schwarzenegger called for nearly all Californians to buy health insurance or face a penalty, Anthony Wright slammed the 2007 proposal as “unwarranted, unworkable, and unwise” — one that would punish those who could least afford coverage. The head of Health Access California, one of the state’s most influential consumer groups, changed course only after he and his allies extracted a deal to increase subsidies for people in need. The plan was ultimately blocked by Democrats who wanted the state to adopt a single-payer health care system instead. Yet the moment …