There is no need to wish or strive for regulatory changes that may never happen: I've pointed out in the past that non-money prediction markets generally are pretty accurate and competitive with money prediction markets; so money does not seem to be a crucial factor. Just systematic tracking and judgment.

(Being able to profit may attract some people, like me, but the fear of loss may also serve as a potent deterrent to users.)

I have written at length about how I believe prediction markets helped me but I have been helped even more by the free active you-can-sign-up-right-now-and-start-using-it,-really,-right-now http://www.PredictionBook.com

I routinely use LW-related ideas and strategies in predicting, and I believe my calibration graph reflects genuine success at predicting.