Are there any problems that should be left to the private sector (free market) to solve-Can you give examples?

Discussion

It is a discussion post and you just have to write what you think.

Can government solve problems better than the private sector?

Are there certain problems that are better solved by the government (either local, state, or Federal)?

Are there any problems that should be left to the private sector (free market) to solve? Can you give examples?