I agree with you. It has to be used. Yet, it is being used already. People buy/sell things. I know it is not equal to the volume, but improving everyday. Especially if there is a prohibition about an item then that item is traded via bitcoin in general.
Big brokers and companies investing in it. I don't see a real danger in short term. Long term, if we want to BTC international currency then we have to sell more via BTC.