Regardless of the financial minutiae being specifically discussed here, the financial transaction regulation needs to slow everything way down and add randomize

Regardless of the financial minutiae being specifically discussed here, the financial transaction regulation needs to slow everything way down and add randomized jitters. It needs to be somewhat plausibly in the range of human perception and response. The jitter needs to be an unknown as well. Essentially this will undermine the undercut advantage the bastard big traders have, disincent/delay manipulations further into the chaos uncertainty windows, and many other things. It may take blockchain technology to decentralize and enforce this, one of the few actual uses for this that the famous "blockchain? probably need a database instead" article debunked.