I don’t practice criminal law, but I think the government wouldn’t apply for a seizure of drug dealer’s contraband, but instead would apply for a search warrant, and then seize what they find.

I don’t know how that corresponds to the digital world. We might not be able to compare apples to apples here. The big difference I see is the collateral damage that is done in the digital world- if they seize a DNS provider’s domain, it tanks tens of thousands of innocent sites. In short, I think we may need new rules in the digital age to deal with seizures like this. I just can’t see the government rushing to implement any rules that will limit its abilities to do something like this.