They could for years do something about it. I.e. start offering DRM-free video for sale. They never cared, so the conclusion is that they don't want to do anything proper about it, they will only spread the DRM paranoia.
To be fair, iTunes and Amazon do/did offer DRM-free for some music selections.
I think blaming the distributors is misplacing the blame. The problem is that the distributors don't have the legal right to do that without contractual buy-in from contentowners who fear that their golden goose will dry up if content is offered without DRM or if digital content can be kept and used in perpetuity by consumers.
