If you’re using 10 services and 1 goes down, there’s a 9/10 chance you’re not using it and you can switch to work on something else. If all 10 go down you are actually blocked for an hour. Even 5 years ago, I can’t recall ever being actually impacted by an outtage to the extent that I was like “well, might as well just go get something to eat because everything is down”.