In Australia any sort of gambling payment on a credit card is treated as a cash advance. If you use PayPal on top of your credit card, the credit card company still manages to introspect it and apply a cash advance fee.
But if you somehow have a 100% correct prediction you are now "insider trading" and that is not allowed because all gambling.. ahem, all betting... hmm... All predicting much be "fair" and "random" and definitely not too good.