[loup-vaillant]

If I take your apple, scan it in my StarTrek replicator, then put it back, I've not stolen anything. At worst, I've borrowed it without your consent. The fact that I can use my replicator to make as many apples as I want, which are just like the one I borrowed from you, is not stealing.

Not saying it wouldn't be wrong. But it's decidedly different from stealing.

Likewise, getting a copy of a copyrighted movie with Bittorent through the Pirate Bay is not really stealing. It may still be wrong, but since it does not deprive the original owner from their own copy of the movie, it's different from stealing.

In general, non-rival goods should be treated with different rules and laws than rival goods. Turning them back into rival goods like copyright does strikes me as a very bad idea. Artificial scarcity is… non optimal to say the least.