It goes against most people's notions of fairness to pay for a product and still have it encumbered with a lot of limitations. I think the case is stronger if we're talking about streams or rentals, but of course DRM is hardly limited to those.
But we’ve always had that. I mean every video tape I ever watched as a child had FBI warnings explaining that there were limits on what you could do with it.
The only difference is that the videotapes can now try and enforce it themselves.
That doesn't really answer the question, does it? If someone wants to lock up their bike with an ineffective lock, it might be a bad idea, but they're not outside of their moral rights to do so.