The role of government in a free enterprise system is to allow individuals to operate their businesses in ways they think that will minimize their profits.
A free enterprise system is one that is based on personal businesses in which they compete to sell their products and are free to obtain any possible benefit. It is different from state-run systems such as communism where the state government controls all business and does not allow large profits to be made. The free enterprise system also allows open or very lightly regulated trade, although it regulates business when the public interest is involved.