Earlier quoted context omitted.
There's a subtle difference between "buying in bulk" and "keeping a reasonable stock". I grew up in a quite poor family and my parents are terrible with money. One thing that frustrated me to no end is that they would almost never buy something ahead of time. An item would literally have to run out before they'd consider buying its replacement, which meant I'd regularly get in the shower in the morning to find there…
> You'd end up going to a local convenience store and paying 2x the price for the item because you need it now. Your grocery budget becomes hugely inflated, and you still end up buying the same necessities. I see this at a lot at my local 7-11, many poorer people do a lot of their grocery shopping there even though an aldi is 5 minutes walk away (so it's actually closer for some of them, literally across the road) an…
If they keep going to 7-11, they will not get any richer.