Ultimately the state is the only option for providing mass large scale infrastructure/networks which is why it was the state which built the fixed line network and the state that built the railway network and the state which built social housing.
Only have to look at the disparity in provision/service of these since privatisation, with the exception of housing based on population density, to see why private enterprise can't deliver. Look at financial services, probably the most militant of any sector in its opposition to public involvement, which was happy to about turn and welcome state intervention when it needed bailing out - something only the state could do (irrespective of whether it should have)