UN member states check out the proposal Ban Monopolies and Cartels and reflect on it if you will
Banning monopolies does precisely what you are trying to avoid- limiting choice. If a good company legitemately earns monopoly status, no government has the authority to take it away. What should be banned is anticompetetive business practices such as tying, forclosure, and predatory pricing. The market must be allowed to work if there is to be economic development and prosperity.
There are many government controled monopolies such as health insurance and other social security like insurances; What I am trying to do is not ban the monopoly from the market but ensuring that whoever wants to enter any market should not be stopped by any government regulation.