On a second thought, DRM is still stupid. With physical media, the claim of only one access is also failed to hold the point: With books, Loudi (Hunan, China) is the biggest base for printing pirated books in China. The rumors even said that it's an honor if your book is printed there if you are a new author. For movies and tv series, you know how easy to copy a tape, a dvd, and it's not hard to rip from bluray disk.
I think the point should not be using all kinds of technologies to limit your customer. You can never stop someone from messing around with a physical media with actual data on it. I think the point is to let people willing to pay for the content they enjoy. I'm sponsoring several projects on Patreon, the monthly spent is about 70 USD, not much, but I really enjoy the stuff they're creating and I want to support them.
With movies and tv series, for example, the Yes Prime Minister and Yes Minister, and "Liz and the blue bird", I bought the latter one on Google Play, but I'm not happy about that I can't download it. If one day Google decides to remove them from their server, just like what Sony did before, I will lose access forever. Unless someone or some publisher sorts out this mess, I will keep all my favorite shows on my disk via BitTorrent. And I'll spend my money to buy peripherals from the studio I like. F*ck pro-DRM publishers.