You have two choices.
You can buy insurance from private sector bureaucrats who are not accountable to you. They divide you up into little pockets that have no negotiating power.
You can buy insurance from the government in one huge group of 300 million people where you can throw the bums out if you don’t like how they’re administrating the plan.
(yeah yeah yeah, the libertarian chorus is singing ‘Taxes are Theft’)
Either the public is in control, or the corporations are in control.
Everything else is just details. In this fight, the public option is not a compromise to be negotiated away. It’s the most important thing.