That’s the crucial fork between my view of digital media and the more traditional one (wherein MP3s, for example, replace vinyl as object in one’s possession). If your local copies are simply expedient cacheings of that to which what you’ve purchased rights, then restrictions on formats, limited freedoms of transcoding, and the other restrictions that are currently being wrapped into DRM, are obviously inappropriate, arbitrary restrictions the only benefit of which is to support particular business models.
This isn’t new news. But…
(Of course this is a naïve and extreme position, which ignores business realities and costs… But that’s not the point..)