The content on dtube is hosted on IPFS which is a protocol similar to bittorent. You can't sue a protocol. Dtube.video is doing nothing illegal, they are not hosting any content.
Blockchain tech is going to reshape this world and turn the rules upside down, you better get used to it :-)
yeah, but that didn't stop governments from incarcerating PirateBay owners.
I am using Pirate Bay each day - it did not die - https://ThePirateBay.org