[otherwiseguy]

The difference is between "the technology" and an "implementation of the technology". Sure, P2P DHT exists. Just like blockchains exist. But a specific blockchain, which is append-only, is trivial to make illegal by embedding illegal content in it, making every user of it technically in possession of illegal material. You can use a DHT w/o breaking the law. You cannot store child porn on your computer without breaking the law.

[posterboy]

In some cases a link to a file is enough, which would implicate DHT, but due to the nature of the distribution would not compromise the whole network. Cf. Pirate Bay.

[hapnin]

What you say is completely true and I agree.

So who's going to shut a blockchain down? I don't see it happening.