I mean the total cap of all crypto. Of course no one can know for sure, but it would be interesting to hear any ideas. Btw the global stock market is worth about 80 trillion
There will grow over a trillion by the end of 2018 I have no doubts. If one of the big players like Ethereum, EOS or ArcBlock make a breakthrough there would grow up to 5 trillion easily. I think 2018 will be the year for blockchain innovations and will see many great projects to be released.