if everyone simultaneously cooperates to increase the demand on any network beyond its capacity then the the network is not able to supply any additional demand

if everyone simultaneously cooperates to increase the demand on any network beyond its capacity then the the network is not able to supply any additional demand. In the case of the electricity network, either demand is reduced or the whole thing grinds to a halt and nobody gets any power at all when the load exceeds the generation. In the case of the water supply system water would cease to flow at points in the network when pressure reached zero. what is there to fail? an extended demand exceeding supply could empty reservoirs folks who engineer communication networks really have the most control over what to do when demand exceeds capacity as they can prioritize some demand and curtail other demand.