Thank you for sharing that chart on Marketwatch. As for an alternative to fiat it seems that presently Blocksize and scalability issues is the biggest obstacle to more adoption for the biggest crypto's.

From what I understand Steem and Bitshares has overcome that hurdle with the implementation of a Graphene blockchain. Litecoin's Segwit activation is another project to watch. It will be interesting indeed to see which crypto takes the lead in the payments space. Payments is the foundation and springboard, like email was to the internet, that will help other projects succeed.