Buffet thinks that what's valuable is blockchain technology, but he doesn't think if the blockchain without a crypto device has no meaning or value. Buffet also does not think about how the process of bitcoin travel can be trusted by everyone so that the bitcoin network continues to grow. I haven't heard of a cryptocurrency network as well as bitcoin, even though market prices can be manipulated but this technology remains transparent. Maybe Buffet can create crypto itself for its business network, but the level of security will not be able to keep up with the bitcoin network.