To be honest I am not really qualified enough to have an opinion on that. All I have is my layman intuition being generally interested in cryptorotocol.

But in my opinion you see it growing because a lot more are thinking about the blockchain protocol rather than the currency. But it purely based on a hunch not actual data.

All that volume isn't from regular folk, it's probably from miners. Miners could decrease if its no longer profitable for them to continue or sink more $$ into capital