It's going to be very problematic if you can't get at the material, if you can't transfer it to other formats when you need to, to make it accessible, to preserve it. But that information will have a very limited lifespan and a very limited applicability. So yes, the digital locks are going to be a problem with information going into the future, and we would certainly not encourage having that tool dictate what's going to be available to any information users now and in the future.
On October 26th, 2010. See this statement in context.