My electricity is stable and reliable, and any power outages I've experienced have been brief, and exclusively due to exceptional weather events.
I'm also a Comcast customer, and I would say that I have some sort of partial or total service interruption (internet is completely gone, or set top box stops working) on average, once every other week or so. These outages are usually relatively brief (a few minutes), but at least once a year I lose one or both services for 6 hours or more. Plus the internet speed varies wildly from "high-end dialup modem" at the low end, to "significantly less than the advertised value" at the high end. Needless to say, I have never actually experienced the advertised speeds.
If I got the same service from my utilities as I did from Comcast, I would end up brushing my teeth with raw sewage about once a month, and trying to toast bread would occasionally cause a power dip that would brown-out every other outlet in my house. I probably wouldn't be able to shower some nights because the cold water pressure would be unusably low, and I would have to reset every clock in my house a couple times a month. The one similarity is that I would still be unable to shop around for better service, because Comcast is the only option in my area.
If you want a TLDR, it's that I would figuratively kill to get Internet service that's even just half as good as my utility service, because right now my internet service is much worse than that.