You cannot do a chargeback on iDeal, but I don't think that is related to it being a product of commercial banks.

The American companies Mastercard and Visa are subject to American rule of law. In the case of a criminal or authoritarian president, such is an issue. You can see how Russian assets got frozen and SWIFT stopped working for Russia after they did the full scale invasion of Ukraine.

Should the USA invade Greenland, they could stop bank payments done via Mastercard or Visa networks.

So for sovereignty, we are better off without USA. We should also transfer our gold and other assets out of USA, since the country is moving towards fascism.