These services generally require someone in the production facility monitoring them 24/7, along with some form of repair crews available 24/7. But, on the other hand, these are services that require 24/7 monitoring, even in the face of blizzards, earthquakes, hurricanes, or other natural disasters that severely impact physical infrastructure, and so they'll have contingency plans for "people can't come into work" scenarios.
As for the 5% permanent lung damage figure, ARDS is found in around 20% of cases with mechanical ventilation for around 12.3% (https://www.uptodate.com/contents/coronavirus-disease-2019-c...)
Survivors of ARDS often have decreased quality of life including lung damage and cognitive issues. I wasn't able to find percentages of these issues in covid-19-related ARDS survivors though.
One of the reasons for that is that there's actually multiple phases to this sort of thing. Quarantine is a response you use when trying to completely squash it early, but as the virus escapes quarantine, you go to a different strategy of trying to reduce the virus' effective r0, involving preventing mass gatherings, encouraging self-quarantine, encouraging working from home, etc. Some quarantines may still be part of the strategy, but it's not the only arrow in the quiver. It's not a matter of choosing between "quarantine everybody completely for weeks" or "everybody dies".
Broadly speaking, it's reasonable to expect a very high chance that the infrastructure industry will successfully keep transmission within itself low enough that it won't actually catastrophically fail. It's a high priority and everybody knows it. A lot of the work involved in this sort of infrastructure doesn't involve being up close and personal with people.
You might want to try to avoid having a plumbing problem in your residence or something, though.
I live in an area prone to power outages (a 4 day outage less than a year ago, although that was an outlier), and I haven't been buffing up my "power outage" supplies. I do have them. But I've been filling up my freezer in stages instead for this. To be honest, I don't even expect the stores to completely fail, though there may be a run on them at the beginning. But the stores will be one of the biggest remaining hubs there will be, by necessity. If I can just pre-buy some stuff I would have bought anyhow and avoid having to go there at all during the containment period, it seems worth it. The extra package of toilet paper from Costco isn't going to go bad in the meantime.
Let me give my generic "preparation" spiel here: Basic prep is a good idea anyhow. Society is far more resilient against a wide variety of threats when more people can last a week or two of infrastructure outage. Being prepped is the socially responsible thing to do. If this is what it takes for you to set up a bit of prep, ok, fine. It's not panic, it's being responsible. Shoot for not having to go to the grocery store for 2-3 weeks, probably. Buy things you'll use anyhow, which means you're just forward-loading some spending you'd have done anyhow. Don't forget to think beyond food; toilet paper, tissues, medicine, shampoo, soap, etc. (Fortunately most of this stuff keeps even better than food.)
No need to panic. But it is a good idea to be ready, because even if COVID-19 never hits your area, someday it's going to be something.
And let me emphasize again, I don't know more than anybody else; I'm just saying where I personally have put some skin in the game.
Alcohol is the best liquid fuel to use. It's nontoxic, can be extinguished with water, and serves double duty as an antiseptic and a nonpolar organic solvent. If you store the alcohol bottles floating in a larger container of water, they are inherently fire-safe for storage, although I don't bother. Considerable exploration of these themes is in Dercuano.
I actually have one of these I made from Guinness and soda can. It has absolutely no safety measure to prevent spilling the fuel. Tip that little can over on the top of a regular stove and you have a fire inside your stove. Ieeee
I have in fact had a raging alcohol fire on top of another gas stove due to spilled fuel (for reasons much more stupid than cooking over a camping stove in my kitchen). Things stored above the stove started to burn (more stupidity). But because my stupidity didn't extend to using something like gasoline or lighter fluid, a cup of water instantly extinguished the blaze. Now I have an ammonium phosphate fire extinguisher in my kitchen. You should too.
Or heat them in the sun? Sun tea beans??