[csi]

The WTO is a big joke because their rulings are non-binding
and the US usually ignores any WTO ruling. For example, in Canada there has been a long battle with the US over Softwood lumber agreements and The WTO ruled numerous times in favor of Canada, but the US just ingnored the rulings anyway. So WTO is not likely to make any difference here.

Secondly, countries are not likely to extradite their citizens for gambling(extradition treaties are more for serious crimes such as murder, child pornography, etc.)
Especially when gambling such as online gambling is legal in most countries.