I have not been able to spend enough time on it, but find enclosed some comments to this great work (I have also some typos detected, but I suppose you have them all now under control):

• One thing I have noticed is that sometimes it is not clear a distinction between the two IP barriers to deployment: one is IP on technology (ok in MPEG-2 licensing, but somehow "abusive" in the new MPEG-x's) and the other one the IP on content, usually managed via Rights Societies but this situation may (and should) change a lot in the DM environment. I think is should be investigated which of both IP barriers is the real (or just major) bottleneck to deployment (I have my own opinion;).
• In the social damage paragraph, at the end the DMM speaks about compensation. Perhaps it is good to say there, that sometimes -for unknown, starting or amateurs content creators- the possibility of making their work public is more than enough compensation. Some may even pay for it (a little bit), what may open a "business case": portal for distributing your work.
• Is there a real difference between policy and technical actions? I think most of the 7 items listed are both, even some of them more a mapping of requirements and legal issues more than policy actions.
• The DMM speaks about interoperability of end-user devices, but does it mean/include interoperability of content representation formats? I guess that the content interoperability is in the UMA/UME sense, that is, different content representation in different usage context, but not the interoperability among devices (or perhaps also as a added value) besides the user/session profile interchange for DMExperience continuity even changing the device. My question is, does the DMM also consider the DVD player interoperating with the mobile phone (besides the passing of user/session profile)?
• Is another bottleneck not just the "inmobility" of some of the current chain players (Content Distributors - mainly the "printed" ones - and Rights societies)? Some of them don't want to move from a business that within the DM framework will ease the "self distribution" of content from creator to consumer, reducing the opportunities for the ones that (upon now) have controlled the distribution/revenues chain and that to still be in the business should modify their practices and services offered to the creators (and consumers?).
• At the end of section 3.2.1 DMM mention DIA. Has (should) DIA cover DRM interoperability? I think that DIA should focus on content interoperability, but perhaps it not "crazy" that DRM is seen as another form of content (like content descriptions that become content associated to content).
• In section 3.2.2 DMM speaks about two Italian competing operating merging after fighting for years. The same has happened in Spain not far along with the two DTV Satellite operators.
• In 3.2.3 DTT you may also mention that in Spain since more that a year there are several open DTT channels (most of them just replicating the analogue ones). The sales of decoders? I am afraid that not enough even for a market survey. Perhaps the "poor" Quiero subscribers do still switch on their decoders.
• Regarding the DMP: what are the fees for? Will there be the possibility of having "volunteers" without the requirement of a fee (I am thinking in the academia world, as you will understand;).

Hoping these late comments help a little bit to the DM vision!