What have you learned about the purpose of government?

For example, the Preamble of the United States Constitution implies that the purpose of the Constitution--which defines the American state--is "to form a more perfect union, establish justice, ensure domestic tranquility, provide for the common defense, promote the general welfare. there are other things but thats just a wikipedia answer

less available tax revenue

this basically means that when they get money from taxes wirth having a lower gdp they get less then what others have with a higher gdp