Why do you think the government can regulate assemblies based on time, place, and manner, but not on the basis of what might be said there?

Because assemblies are used to meet and express views on public affairs.

Explanation:

The constitution protects the right of US citizens to meet with each other to express points of view (free expression) on public matters, where the government must be neutral and they may request the attention of public officials.

the act of deciding on matters of the economy. economic decision making is routinely conducted by finance ministers, economic advisors, heads of major central banks and business leaders and can have profound effects on a major economy.