I wrote a topic about this subject some time ago.
I think they’re quite ahead of others. Prediction markets can (and I think will) be a great thing for Ethereum. You ask thousands of people to give the price of oil every day, first, as a hash of their answer, some blocks later as the visual value to the contract so no one can change after they already gave their answer. You punish the ones who are far off from the rest (by not giving back their deposit they’ve sent to the contract) and reward others with a little fee when they are in line with the rest. You can do this for commodities, stocks, the fact if there was another earthquake somewhere etc. And now you have price and datafeeds on the blockchain, ready for insurance, options, futures, and all the rest the financial world is doing right now. I’m quite excited to see that stuff coming.