To be honest, I don't think it will change things like many had originally hoped. I think that governments will not allow it to happen. I think that bitcoin will be 'allowed' to co-exist with the current financial system as an alternative investment that mostly works as a store of value. As soon as we start talking about replacing government controlled fiat, I think we are going to face an extremely difficult uphill battle. One that may not be winnable, at least anytime soon. I wish it were different, but that is how I see things playing out personally. Which is why I am not a big fan of the cryptocurrencies that are trying to compete with/replace fiat. Most likely fiat will just be digitalized.