For most people, DRM is enough to stop them. It's only a select few people with a deep understanding of technology who can defeat even the most basic DRM.

I don't think you get the point. Most pirates never try to beat any DRM. They pirate what other capable few provide to them DRM free. Yes, some initially break that DRM. But it takes one knowledgeable pirate to do it in order for the rest to get it DRM free ever since. So, going back to the point above - DRM is not effective for anything except degrading the product for legitimate users.