On the west Coast of Canada, my City recommends 3 days worth of Preparation and lists items suggested like Water, food, first aid kit, flashlights, etc.
Personally, dealing with a statistically expected overdue large magnitude earthquake will require more than 3 days supply. Judging from other natural disasters a minimum of 6 weeks, I am about 8 weeks, but knowing the reality is that most people around me are simply not prepared at all or in denial.
You get it...Yay! Jeez, how hard is it? Not hard at all...
Three days is a little light-on for me and your eight weeks...Probably about right. The reality, as you point out, is that many have zero-prep. It's those who come knocking when they need something...Jumping fences, stealing and looting...Getting shot in the chest...All avoided by a little preparation ahead of time.
Parts of Aus (The tropical north) are a little better prepared as they have cyclones but in the main I'd say that the greater majority of the country, or most countries are woefully prepared, if at all.
Thanks for your comment...Glad to see a little support for #teamprep