The best part is that the second hand market satisfies the legal criteria of ownership, but doesn't reward the creators in the slightest.
I've bought a number of media second hand to make sure I own them, and it's remarkable how there just is no way to pay any original producer for things in a lot of cases. I can download a movie easily, but there's no way for me to pay anyone for having done so - meanwhile if I buy a physical copy of that movie from someone else...the creator doesn't make any money from me at all, but it's all completely legal.
This is not entirely true: Selling on the second hand market reduces the cost for the original buyer, allowing them to buy more media than they would/could without the second hand market.
That's assuming second hand prices below the original price. Inflated prices for rare works (which could be easily republished as digital media by the creators) are a different story.
I've bought a number of media second hand to make sure I own them, and it's remarkable how there just is no way to pay any original producer for things in a lot of cases. I can download a movie easily, but there's no way for me to pay anyone for having done so - meanwhile if I buy a physical copy of that movie from someone else...the creator doesn't make any money from me at all, but it's all completely legal.