Just like the EU started their independent EU-wide (500 million people) payment network to become independent of the American payment monopolists. It took a fascist US admin to get the move world-wide rolling to decouple from the US and towards smaller sovereignty, but ultimately it is for the better.
Far more likely was the election of a banker as PM. He did chair both the Bank of Canada and the Bank of England. No doubt he knows how to get banks to do things.
This project started in 2016. It just took a decade to roll out.