Not just cryptocurrency, but smart contracts change everything. Pretty much all of western civilization. Any money transfer business if it doesn't play, will be fucked. The CC industry, unless it supports crypto, will be fucked. Any industry that is digital and centralized and handles personal data, could be fucked. Government could potentially be fucked. Lawyers will need to adapt or, you guessed it, fucked. Insurance. Healthcare. Education. All can be improved via this tech, and for the betterment of society, hopefully.