I'm not sure if you're trying to be sarcastic, but yes, rent seeking is different from selling a product. In this case, the copyright holders would rather you pay for _temporary access_ to their libraries, rather than actual ownership -- a tradeoff that is (somewhat sadly) acceptable to many when it's a single, cheap subscription, no fuzz, and critically, no ads.
The definition of rent seeking is creating nothing of value. They are producing original content. You can pay more to buy the DVD or Blu-ray if you want to own the content outright.