Yep, it's unethical but not illegal.
The point is that if its already on the disc then its not really DLC and consumers should not be required to pay for it. It's BS and should be deemed an illegal practice by the FCC.
Customers aren't required to pay for it.
This is why I prefer Midway. When you pay for DLC you download it. They ve said companies are cheap when its on the disk.