Why does even a free market economy need some government intervention? (economics)

To combat unfair market practices

Explanation:

In a free market economy the prices of goods and services are been controlled the factors of demand and supply.and also customers and supplier have a role to play in determining the prices. in a free market economy the Government has very little control over it.

Government intervention is needed at times to curb unfair market practices that could be portrayed by the supplier/sellers in the open market for their selfish gains.  in the open market the suppliers might hoard commodities in other to create artificial scarcity with the aim of driving prices higher than they should be . hence Government can common by imposing increased sanctions on such  suppliers so such practice will be discouraged.

answer///supply is elastic, and demand is inelastic;