Why would we want insiders to profit on a public decision like war? If some general has money on Iran's leader being taken out by March 1, he might not be acting in the best interest of the country.
So if a war with Iran is going to happen, and so a general bets that it will, the odds will jump and go very high.
Now at least theoretically, people in the Middle East can see the high odds, and travel elsewhere.
After seeing how many people got trapped in the UAE, I might check these prediction markets in the future for similar things.
Surely you aren’t saying that because prediction markets can’t save every single life, that it’s somehow useless to save a few.
Another example, if odds jump on a missile strike on a particular city, you might have the chance to move out of the way.