Someone sneaking into a movie theater is consuming a limited resource (a specific seat at a specific showing) and causing some presumably small amount of wear on the seats. They're actually taking something even if its value is probably significantly less than the notional lost sale. But someone who downloads a movie has taken nothing. They just have something someone didn't want them to have.

It wouldn't be a lost sale, but that would be trespassing, and possibly deprive someone who legitimately rented that seat.

Let’s consider piracy as digital trespassing then

Not the same thing at all. The digital equivalent to trespass is unauthorized access to secured locations / resources like servers.

Counterfeit then maybe?

IRL it'd be more like what monks used to do, copy books by hand. Only today we have machines that copy books by idiot savant automation at speeds our ancestors would call magic.

Further, none of the physical resources 'of the owner' are being consumed past whomever first liberated the data. Hopefully obtained as an otherwise legitimate purchase / rental / access. A copy of a copy...

As the owner of my digital library, I allow others to take freely via P2P :^)

Even if you bought a Blu-ray, chances are the licensing doesn’t allow you to do that. You usually can legitimately share with close friends and family to a certain extent, and that’s it