Actually I took the gas price bit from specific experience and saw enough examples in a quiet Midwest area growing up to expect my experiences weren’t unique.

The other issue is people, like in the article, just buying up a bunch of stuff so that other people literally can only buy from the opportunist. Consider the battle for concert tickets, which the band might sell for $20 but a scalper would buy and try to resell for $100. Yes it’s technically possible, but it’s fine for a society to determine it’s better for everyone if you’re not allowed to take advantage of people’s needs or vulnerabilities like that (when it comes to health supplies, for example).