No other crypto coin has spread so big as bitcoin.It's true that others are cheap,but what will you do with it if you can't spend it properly.
The point is to find unique use cases for crypto currency. There is nothing unique you can buy with Bitcoin that you can't buy with fiat. That's exactly the reason why adoption is not happening fast enough to overcome selling pressure from miners and early adopters.
Crypto 2.0 technologies are designed to tackle the issue of shortage of unique use cases. In particular, asset exchanges allow to crowdfund interesting projects that cannot be funded via other channels, which is set to drive demand for crypto 2.0 currencies.