Earlier quoted context omitted.
And the really weird part is that while the propaganda puts it as "protecting property", it really has exactly the opposite effect. When you buy a physical book, that book is indeed your property, and you can do with it whatever you want. Now, with DRM-infested ebooks, you are actually just licensing it for very restricted use. You might as well be claiming that making private home ownership illegal would strengthen…
A better analogy would be to landlords rights vs. renters rights. DRM sets conceptually equivalent restrictions on protected media as leases set on rented property. The difference, of course, is that it is very hard/impossible to break the restrictions set by DRM, whereas the restrictions set by leases are hard to enforce. The problem that I see is that the language around DRM needs to change - you aren't buying that…
But the reality is that there is no such thing as "owning" a copyrightable work of expression like Bob Dylan's lyrics. Instead, some people have temporary legal control over who may copy those lyrics and for what purpose. There is no moral or legal sense in which someone else "owns" those words on the page in front of me and I am not in any way "leasing" or "borrowing" the words. However, they may still try to restrict what I can do with those words.
So DRM is about technologically limiting others' rights, usually in some way above and beyond legal limitations. For example, if you buy a DVD, you legally have the right to make copies for personal use, or e.g. use 30 seconds of footage in your own work of art. But DRM may prevent you from exercising those rights.
However, I completely agree that it is misleading of companies to use the word "buy" when what you're acquiring remains under their control, not yours.