Wrong example. It's not stealing as it's simply a case of someone buying and then sharing with others. One can argue that by buying something, you have the right to what you want with said purchase as you now retain ownership.
If I buy milk and share it, the Dairyman has no business complaining as it's now my milk to do what i want with/
No, I think you
give the wrong example. If you give away half of your milk you only have half left. No matter how many drink from it, a pint is always a pint. But if you ''share'' a DVD, you still have a whole DVD left. In other words, you didn't share it, you reproduced
another person's work without authorization. It is a different action altogether.
So although your argument sounds reasonable for just sharing something with a friend, what if I bought a DVD, rented a theatre, and then started showing the DVD to everyone willing to give me a small gift?
It would seem the people shouting most for ''freedom'', really are mostly concerned with just getting free stuff.