Cryptocurrency through decentralization, and transparency is definitely shaking up organizations and nations as a whole. There is a lot of room for growth and adoption coming up that I feel would lead to a more honest and individual distribution of responsibility for how the future turns out for everyone on planet Earth.
I don't think that quantum computing would stay a problem, even if it initially starts that way. With every type of breach, there will always be new advances made by blockchain to counteract it. Just because operating systems get viruses, doesn't mean that they can't be updated!