Utility companies provide electricity, cable Internet, cell service and natural gas. The free market may be less capable of providing utilities because generally only one utility company can operate in each area, and/or because governments often regulate or subsidize the construction of lines and access, and this benefit should not go to any private corporation. Co-operative utility companies function in many areas, especially in rural areas. With co-operatives the users own and manage the utility company. See example. User-owned and managed utilities solve many of the problems that arise with state-run utilities (bureaucratic inefficiencies) and with private for-profit utilities (overcharging).
Cell phone and Internet services is especially important to a Direct Democracy insofar as free access to information and free speech are important. Both private and state controlled communication services are subject to censorship, and cell/cable service might be better run by co-operatives. See example.