The mental gymnastics to justify piracy as anything other than theft is always interesting to watch.

So is the substitution of moral smugness for complex thought.

Call it stealing it or not, non rivalrous or whatever, the point is that the movie owners have intellectual property rights to their movies and can decide how it is distributed.

If you think that's a dumb deal then you don't have to take it. Pirating it is simply wrong.

piracy is receiving the service value of entertainment without providing the requested fee.

Another word for it is stealing.

For receiving the service value of entertainment of reading this comment, I request a fee of $1,000.

Is my request reasonable? Do you feel inclined to pay me? Do I incur $1000 of damages if you choose not to?

Theft is not defined by the receiving, it is defined by the taking. The moral ill is not you being enriched, it is the person who had it rightfully, being deprived of it.