“Cyberbunker”, the clandestine web hosting company, has enough fuel to run their datacenter for 10 years if authorities shut power. An entire level of the bunker is fuel tanks. They host any website and nobody has been able to break in to serve a court order. Even SWAT attempted to get in with no luck.
I am not a lawyer nor an LEO.
But I have been around a long time and there are a few things I know.
First, the cops do not have to gain entry to serve a warrant or summons.
All they have to do is encounter the person on whom it is to be served in a situation where they can serve it.
That is usually very easy. The officers of that company are not going to stay in the cave for 10 years.
Also, unless the crime is a serious felony crime involving danger to the accused or others such as murder, suicide, etc., a summons by both registered and certified mail is legal in most jurisdictions.
So I am surprised at the statement that no one has been able to break in to serve a court order, since breaking in is not required.