They already have monetised breathing: https://www.theguardian.com/lifeandstyle/shortcuts/2021/mar/01/take-a-deep-breath-how-cornish-air-sells-for-60-a-bottle-even-if-its-from-devon

It might seem like just a schtick to con rich people, and it currently is, but that doesn't change the fact that there are scammers out there literally "collecting" air in jars (I saw a segment on them a while ago on tv, they even got a "collection net" out thinking it made them look less like scammers. It didn't) and selling it to Chinese people (who's own air is so bad because their production is trying to keep up with wester demand) for profit.

And it isn't just out of touch rich people who need to do this though, they're just the only ones who can afford to waste their money on this useless "solution" to their problem, but the problem, which was created by capitalism, isn't going anywhere until capitalism has sold us a "solution" for it. Just like they're trying to do with this sun blocking and carbon capturing bullshit now.