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Steam Users Rally Behind Anti-Censorship Petition
(gamerant.com)
This is a most excellent place for technology news and articles.
I don't know what it's like where you're from, but here in the UK all banks use Visa, MasterCard or Amex for their bank cards.
Not only that, but even if you manage to find a platform that isn't directly owned by them, they are payment service networks. They are there along the way to facilitate transactions and manage relationships with merchant services. There is no escaping them.