The United States federal government chartered and owned corporations operate to provide public services.
States also have the power to charter corporations that they own, control, or are responsible for the regulation and finance of.
For example, a tribal council could establish a public service broadcaster along the lines of Ireland's Raidió Teilifís Éireann, partially-fund it with a television license on tribal land, and make up the difference through advertising, thereby making it both a means of uniting the tribe and giving it a voice and a commercial venture by the tribe.
The Alaska Natives are particularly advanced in using their tribal sovereignty to incorporate corporations that are owned by and for the benefit of their tribal citizens and often compete in highly competitive economic sectors through the Alaska Native Regional Corporations.
The Native American tribes in the 48 contiguous states often use their sovereignty and their ability to charter to compete using regulatory easements; for instance, Native American tribal corporations often trade in goods that are highly taxed in surrounding states (such as tobacco), or engage in activities that surrounding states have (for reasons of public policy) forbidden, such as the operation of casinos or other gaming establishments.