TVA used to be attacked all the time by politicians, influenced by people that would like to participate in ownership for profits or ownership outright. But, it is a good model of government involvement in creation of supporting infrastructure over a vast area, that benefit private enterprise by it's output and presence, but not individual or corporate direct profits, while providing good management of resources, production and stewardship over a large diverse area, with profits beyond production, maintenance and expansion going back to the treasury that funded its creation.
Some government programs, just work, contrary to what pure capitalist would lead you to believe.