> Strong regulation and legal consequences could potentially fix this.
There are regulations. E.g., in the US, 17 CFR § 40.11 prohibits contracts on "terrorism, assassination, war, gaming, or an activity that is unlawful under any State or Federal law" [0]. The problem is that those responsible for enforcing those regulations are currently uninterested in doing so [1].
There are regulations. E.g., in the US, 17 CFR § 40.11 prohibits contracts on "terrorism, assassination, war, gaming, or an activity that is unlawful under any State or Federal law" [0]. The problem is that those responsible for enforcing those regulations are currently uninterested in doing so [1].
[0] https://www.law.cornell.edu/cfr/text/17/40.11
[1] https://www.cftc.gov/PressRoom/PressReleases/9183-26