Final answer:
Governments can impose barriers to entering industries through regulations, permits, fees, and product restrictions. They can also limit where and when businesses can operate through zoning laws.
Step-by-step explanation:
Barriers to entering some industries can be imposed by governments through various means. These government-enforced barriers can include regulations, permits, fees, and restrictions on products. For example, a government may require a new business to obtain many permits and pay fees, making it harder to start up. They may also impose restrictions on the types and quality of products a company can sell, limiting its market reach. Government regulations and zoning laws can further limit where and when businesses can operate.