Let's assume, for argument sake, that a global economic recession is right around the corner. Stocks are dropping, home values tank and unemployment rises. What do you think happens to cryptocurrency? We haven't seen a major global recession since the inception of blockchain and cryptocurrency. It's easy for a 'new economy' to thrive when everyone is enjoying 10 years of growth, but what happens when the traditional economy tanks?
Probably it would tank at first also, as panic arises. Later it would establish itself as a safe haven, after panic settles and people start to think where their money is safe, like gold. Crypto like bitcoin and ether is natural choice