Blue Cross is sort of a franchise system with different regional/state franchises. All of them were originally nonprofit but many have changed over the years to be for-profit (notably BCBS of California, for example). My local franchise, BCBS of North Carolina is still not for profit: Blue Cross NC is a fully taxed, not-for-profit North Carolina company with major operations centers in Durham, Fayetteville and Winston-Salem. https://www.bluecrossnc.com/about-us