Many countries have both private and public sectors coexisting side by side. Some examples include:

1. United States: Known for its market-oriented economy, the United States has a robust private sector, with numerous private companies and businesses operating alongside various government entities.

2. United Kingdom: The UK has a mixed economy, with a significant private sector consisting of various industries, such as finance, manufacturing, and services, along with a public sector that includes government agencies and public services.

3. Germany: Germany has a social market economy, characterized by a strong private sector consisting of small and large businesses, as well as a well-developed public sector that provides essential services and support.

4. Canada: Canada also has a mixed economy, with a private sector that includes various industries like energy, technology, and retail, alongside a public sector that includes government departments, healthcare, and education.

5. Australia: Australia has a diverse economy with a significant private sector that encompasses industries such as mining, agriculture, and tourism. The public sector includes government services and public institutions.

These are just a few examples, and many other countries also have a combination of private and public sectors.