Well, although it may not be the most profitable game in crypto, there is some money to be made with some of the contracts, namely Bitcoin. I have better ways to spend my crypto though. I have been fooling around with miningrigrentals.com just to mine some HomeBlock Coin for fun..not profitable, but fun nonetheless https://www.miningrigrentals.com?ref=55688
It's not if you can make money with them, it's that you could make way more taking the same money, and putting it directly into the cryptocurrencies you want.