Okay I concede that the power grid was a poor example but clearly the internet is not. No one pointed out a counter for teh internet

Some of the biggest failures have been BGP leaks/hijacks. E.g. https://www.ripe.net/about-us/news/youtube-hijacking-a-ripe-...

This has gotten significantly better in recent years, but it used to be possible and common for a single misbehaving AS to cause global issues.