Crypto currencies are far from what is being imagined in that article here. I think crypto currencies are not capable of doing that because they themselves have no solid support. Leaving behind the whales I can only see weak hands everywhere who use bitcoin and crypto's as medium to earn money and nothing else. As long as it doesnt end up having real use it cant be used for the national development or so called welfares around the globe. That process will get executed later in the time and not just now. This world is yet to understand the best of its characteristic and then we can think about the welfare really.