Waiting on the lawsuits when someone comes home from a week long holiday to a dead/sick pet.
Never mind the company server's being down, what happens if your phone line gets cut during a storm, and shittytel* don't notice until you ring up to complain.
The fuel distribution system is the worst, the tankers are diesel, petrol pumps are electric, and the electricity to heat the crude to refine it.
It's not a network as no one runs fuel pipelines to bowsers, bar the odd airport.
* generic term for your local crappy telco, eg Telstra, Comcast, BT etc