It’s very common in Lebanon, for example. The government is unable to supply continuous electricity, so they do so for only set hours. Then you have to get a generator from a private company if you can afford one, which supports a different number of appliances depending on which package you buy. The outdated grid is overwhelmed, and too expensive to run.
In countries where the grid is essentially one big circuit, a fault within the system cuts power for everyone, instead of a small local area like you’d expect in the UK. These tend to be countries where there isn’t sufficient government power and finance to update the technology, worsened by growing populations.