[mvn9]

>Why do we see standards for everything else but this? What would the standard entail?

Good question. hakfoo's answer seems to be a good start.

I would include something for automated micro-pre-payment. If you are just browsing news sites, it would be inconvenient to constantly confirm payment. Likewise, confirming payment for every played song is annoying. But that would also require some form of trust-network to take care of spam and fakes.

Like html, I wouldn't worry about getting it right the first time. It just needs to be usable and can be refined from there.

>What prevents anyone from making a standard?

Nothing. But where's the benefit for anybody to push it? If it is a standard, then all competitors can reap the profits without any investment.

This could have been Mozilla territory: Join Brave and make micro-payment a valid option for content creators.