Comment by nine_k

Per-socket circuit breakers are very much a thing here in the US. I assume they are mandatory in wet environments like bathrooms and kitchens. I think they are adequate to protect against a local leak from the live wire to the ground wire, which would likely mean that the connected device is broken or got water inside it, and may be dangerous to touch.

I suppose that a device that suddenly starts to consume far more current than normal under normal voltage is likely broken / fried inside, and it's too late to save it by blowing a fuse. The fuse just prevents a fire, but an automatic circuit breaker in a socket would likely do the same.

There is the case of overvoltage due e.g. to nearby lightning strikes. I suppose a fuse is unlikely to save your computer in such a case, it's too slow. Fast-acting power line protectors exist though, and are cheap and ubiquitous.