Nothing lasts until infinity, the currency of the Roman Empire disappeared because sooner or later the world ends up changing. Although crypto can stay with us for a long time, I don't think bitcoin will. It may be bitcoin itself that changes internally, or it may be external factors, such as governments that force it to change or disappear. So although I think we have 50 or 100 years of cryptocurrencies left, I think that in a concept that has just been born, we have to wait, that until it is definitively established there will be many changes of cards and players