Why is the government company form of organisation preferred to the other types in the public sector?

It is preferred to other types in the public sector because it has various advantages over other forms of public sector :

It can be done on large scale due to presence of huge capital.

Because of its capital requirement it include innovation of products and hence it attracts customers.

It also help in the expansion of market.

It has both government as well as public member which help in running the business freely without much interference of government.

it is the best one to achieve the objective of social welfare with sufficient profit.