Yes, they won't switch and they don't want to switch. The Blockchain tech is there for 15 years now and I haven't really seen them implementing it for anything else than CBDCs. But from India's CBDC experience, I can say it's not different than using fiat, in fact it's worse than that. I don't know why but India central bank have put a limit of 10000 INR transaction per day on CBDC.