I addressed this in another comment, but as a short thought on the ISO issue - DLNA itself was never adopted by ISO, but UPnP A/V on which it's based was. ISO really wasn't an issue here, though, as the actual DLNA specifications (and the UPnP specifications they incorporated) were maintained and distributed by the DLNA incorporation itself. This is very common for these types of standards (general standards bodies tend to not even be interested in them until there is a decent degree of industry momentum, which you have to get by putting together an implementers group), and I mentioned USB as another prominent example, it's standardized by USB-IF, not IEC, even though each major revision is submitted to IEC after USB-IF adopts it as basically a rubber-stamp exercise.
All of that said, DLNA Inc. provided the specs only to members. I do not know what membership cost, but I suspect it was well more than ISO charges for standards copies. I have no doubt this was a hindrance to DLNA acceptance in software, as it would have blocked out a lot of small and open-source efforts. For hardware vendors, having to pay hefty membership dues to an implementer's group to get access to standards is par for the course and how about half of the hardware interconnect standards work, and I don't think it caused much hesitation there. This might help explain why, for a period of 5+ years, embedded DLNA clients were pretty standard in HD-DVD and Blu-Ray players but there were surprisingly few software options. It's no doubt also a factor that the major promoters of both HD-DVD and Blu-Ray themselves were also members of DLNA and may have incentivized their licensees to implement it.
All of that said, DLNA Inc. provided the specs only to members. I do not know what membership cost, but I suspect it was well more than ISO charges for standards copies. I have no doubt this was a hindrance to DLNA acceptance in software, as it would have blocked out a lot of small and open-source efforts. For hardware vendors, having to pay hefty membership dues to an implementer's group to get access to standards is par for the course and how about half of the hardware interconnect standards work, and I don't think it caused much hesitation there. This might help explain why, for a period of 5+ years, embedded DLNA clients were pretty standard in HD-DVD and Blu-Ray players but there were surprisingly few software options. It's no doubt also a factor that the major promoters of both HD-DVD and Blu-Ray themselves were also members of DLNA and may have incentivized their licensees to implement it.