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
I think the question is how big 'can't' the market get. Seeing that even at the coming G20 convention, the discussion around regulation of cryptos centres about its benefit rather than crippling the system. So if i were to guess a figure - it really is too soon to tell, but around the ball park of $8 trillion USD by 2020 if regulation goes well.