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Steam Users Rally Behind Anti-Censorship Petition
(gamerant.com)
This is a most excellent place for technology news and articles.
The problem here being these payment processors are global and none of this is illegal in the jurisdictions affected. This regional blocking, while nice, shouldn't even need to be a "solution" to this. It's a sledgehammer "solution" to something that was never enough of an issue for actual legislation.
Edit: clarify point
Right, my point is that Visa shouldn't care if an American is buying something that's illegal in China, if the product is not allowed for sale in China.