If I understood it correctly (I am not at the summit): You can choose if you want to put the device into a mode where it is "DRM ready" which may disallow you to do some things, like becoming root for example. Or you can choose to put the device into open mode, which means that you cannot use applications relying on Digital Restriction Management at that time (or rather that those apps probably will not run then). Which I think is an okayish trade-off.