[Tabular-Iceberg]

I get that, but for these pop-up shops selling to partygoers out of large tanks it seems like very little extra effort and expense for a dramatically improved user experience. Market forces alone should be enough to incentivize adding oxygen.

[klyrs]

Next you're going to expect them to use gases that are sourced for human consumption. But this is a gray market. Nitrous isn't meant to be used this way; so a gas supplier won't want to sell the healthier alternative for fear of getting caught knowingly selling it as a drug.

[dr_dshiv]

Markets are not entirely efficient, or else there’d be no work to do