Earlier quoted context omitted.
That's not unreasonable - you don't own World of Warcraft you own a license to play it. The distinction being made here is not between holding copyright and holding a license. It is between owning a copy and holding a license.
But this is why the concept of the software licence was developed. It is explicitly developed so that you don't take ownership of the item in the same way you take ownership of a DVD or printed book. Holding copyright is not the same as owning an item. The parent comment is factually correct.
Whether they should be legal is a different and murkier question. And resale of digital music files is clearly pretty ridiculous, since you could just follow this plan for free stuff:
1. Copy the file.
2. Upload it to the reseller.
3. Profit!