As a counter point, you could argue that the pseudonymous nature of cryptocurrency is simply another technological hurdle that, like the scalability problem, can be overcome in time.
Not really. The trouble with deanonymization in a network is that as soon as anyone fails to follow the proper privacy protocol, the entire network can be unmasked through the social graph.
For example, Flickr users have been identified by their Twitter connections:
I would imagine Palantir has been working on this since cryptocurrencies started being becoming popular, even though they have denied it[0]. Or somebody else such as SABR[1].
