It looks like cryptocurrency brings an incentive to finally take computer security seriously for consumer grade software and hardware. It is the first time something is really at stake apart for intangible qualities such as "privacy" and "intellectual property". It is an interesting and unexpected(?) second-order effect of cryptocurrency.
It is impossible to predict the cost and/or gains from now to an undefined time in the future. But the good thing is that this will help non-cryptocurrency security as well.
