Well, this was once true of, say, television networks, telephone companies, electricity providers. But, they had too much power (mostly due to network effects), and so they were made into a special kind of private company, called a "utility". They still got to make a profit, but their actions were controlled by an elaborate web of rules and regulations, which were sure not perfect, but they were better than letting Thomas Edison decide if you could have electricity or Alexander Graham Bell decide if the contents of your telephone call were allowed or not.