Super reliable power supply breeds complacency
North America enjoys a pretty reliable power supply but when it goes down, it really makes a job of it.
I was in Toronto when the Northeast US and southern Canada suffered a blackout, a few years ago, that lasted up to 5 days. Generator sales went crazy, even the local butcher had two going to keep his refrigerators working.
Countries that experience failures on a regular basis are usually well prepared - with either portable or standby power units ready for service. High-rise apartment buildings in Ho Chi Minh City list their features such as swimming pools, sun decks and always emergency power is listed as a feature.
Many moons ago I worked a a technician at a Decca Navigator transmitter station and our station manager, the late John Pratt, always surprised us with his sneak power failures not only during the day but also in the middle of the sleeping watch at night. We had banks of batteries that carried the load whilst the generator started up.
When the real thing happened, our transmitter performed flawlessly.