Maybe the misunderstanding stems from a geographic difference. The rice I buy seems to come in an under a co2-atmosphere vacuum sealed bag that costs around $2 (or less on sale) per kg.
> What they were into, big time, was canning vegetables,
My grandmother did this too, after living her childhood through WW2 (in Germany), she used to have a repository of canned vegetables in the cellar. I sometimes talked to her about her rural live in the war-torn country, and she told me about soldiers, and all kinds of people, who would come by in war-time, where food was very sparse. And I think she maintained that sort of hoarding behavior throughout her life, based on the experiences she made as a child.
Interesting. Our (my part of the US) rice is mostly sold in small plastic bags (perhaps 1-2kg), or for some brands hard plastic containers; larger amounts come in either a much heavier opaque plastic bag (like pet/livestock feed, when it's not in a lined paper bag of some kind), or a thin clear plastic bag inside a rough cloth bag. If there are already-vacuum-sealed options here, I've not noticed them.
Reading some other comments, it is also possible that these bags aren't actually vacuum sealed. It is hard for me to tell how much of a barrier you need to get a good sealing, in particular to protect from rice weevils (bugs), which appear to be the biggest issue.
> What they were into, big time, was canning vegetables,
My grandmother did this too, after living her childhood through WW2 (in Germany), she used to have a repository of canned vegetables in the cellar. I sometimes talked to her about her rural live in the war-torn country, and she told me about soldiers, and all kinds of people, who would come by in war-time, where food was very sparse. And I think she maintained that sort of hoarding behavior throughout her life, based on the experiences she made as a child.