[TZubiri]

My main proposition was that prediction markets include sports betting as well as a bunch of other things, and they are therefore more regulated.

Did some research, and Kalshi (US based) is regulated by the CFTC, so they are already regulated by the same stuff that regulates securities, including price manipulation.

The subject of insider information is different because these are not public securities, there's no fiduciary responsibility. But it's not that there are no regulations, it's just that that specific regulation that we associate with the 2008 crisis just doesn't apply. But that doesn't mean there's no regulation, there's heaps, feel free to check out the CFTC website.