Aren't a problem for whom, exactly? I'm not commenting here with concern about the prediction market businesses, founders, or shareholders. I'm concerned for the suckers who are and will continue to be taken advantage of. Forgive me for not abandoning all empathy for those suckers just because they don't realize they're being mugged. These prediction markets are zero-sum, with the connected and resourced taking yet more from those with less.

That's like me complaining about Wall St. tampering with bond ratings on sub-prime mortgages, and you telling me "Don't worry, the banks will be fine." I don't care about the banks, they have enough people looking out for them, and their golden parachutes will catch them on the way down anyway.