I'll bet the tunnels lead to dummy datacenters and they route the utilities from there to not draw suspicion.
Two floors of the bunker are living space with luxury amenities and the leader does pretty much live underground. There are numerous warrants for him. He does come out sometimes based on photos but they can't find from where.
He is selling server space at a HUGE markup and making tons of money to be able to pull these shenanigans. They only accept cash and the number of servers is secret so nobody knows exactly how much is made.
I did a quick check on the net and found that the cops did get into the first bunker, in Sweden???? (I forget) and arrested several people.
Two served jail terms for running a meth lab there.
The same track led me to stories reporting that no one knows where they operate from.
The did more recently arrest one of the officers of the company in another country, the name of which I have forgot....
But he was operating from a van stuffed with electronics.
The point being that the stories about the bunker probably are the product of someone’s imagination since its location is unknown.