Sometimes, yes. Frequently it's very difficult to explain to a client that the way you[1] interpret the words they[2] are using is rather different than what may be in their head.
That is, from the technical perspective it may be 'impossible' to achieve perfect DRM. But from another perspective, if the added cost of circumventing that DRM is large enough that most[3] people won't bother, it /may/ be a success. See: Steam.
In short, the language/terminology barrier between people in different fields results in a lot of client/developer miscommunication, frustration, and, frankly, poor results.
[2] The party paying someone you to handle the technical side
[3] Again, we run into a problem with precise definitions using 'most' - do we mean 99.9%? Do we mean enough that the cost of implementing the DRM is larger than the $ saved. Though the lost sales due to /having/ DRM is an entirely different discussion.
