There Are 89,004 Local Governments in the United States (2012)
census.gov
census.gov
I find this has interesting implications when discussion heads toward "what if we supported X through the government", and the inevitable objection that handing "the government" too much power would lead to excessive concentration. The reality is that distributed governmental support might well be diverse and reasonably competitive.
By contrast, there are roughly 2,200 companies listed on the NYSE, with another 3,400 at the Nasdaq, a substantial portion of which are foreign:
<https://www.statista.com/statistics/1277216/nyse-nasdaq-comp...>
Citing Tabarrok, Alexander (2002). "Market Challenges and Government Failure: Lessons from Voluntary City". In Beito, David T.; Gordon, Peter; Tabarrok, Alexander (eds.). The Voluntary City: Choice, Community, and Civil Society.