A private company started, funded and run by who? I don't think that claiming the Falcon 9's reusability is not a significant factor in SpaceX's comparatively

A private company started, funded and run by who? I don't think that claiming the Falcon 9's reusability is not a significant factor in SpaceX's comparatively low launch costs stands up to scrutiny. How could it not lower costs significantly? Likewise, claiming SpaceX benefits from government subsidies is a red herring - all aerospace companies benefit from government subsidies as the government is their primary customer.