For what exactly?
Commercial Space Stations are being developed and financed by private companies and corporations, potentially in cooperation with various governmental agencies.
Deep Space Gateway is being developed by the International Space Exploration Coordination Group which consists of numerous governmental and intergovernmental space agencies (led by NASA, ESA, Roscosmos, CSA, JAXA) in cooperation with some commercial partners.
Various missions to Moon and Mars are being planned by numerous countries, state-owned enterprises and private companies alike.
Asteroid mining is currently at a very early staged and is mostly being tested (as a concept) by private startups.
So basically space exploration is a joint (inter)governmental and commercial venture, financed both by taxpayers of the countries involved and investments of various private entities.