In the Old Days(tm), say 1990, electric power companies depended on Bell System wires for the most critical protective relaying applications, and the Bell Operating Companies provided nine 9s reliability with latency approaching the speed of light. Television networks likewise: national distribution in as close to atomic time synchronization as was humanly possible.
Today one is lucky to be able to make a voice call from one medium sized city to another without dropouts, jitter, disconnections, and other digital voice garbage. Latency? Ha ha ha ha. Reliability? Not even funny.
Progress!