Has intel said anything about loosening their grip on the thunderbolt spec to make it easier for people to implement thunderbolt on devices? I can rather easily

Has intel said anything about loosening their grip on the thunderbolt spec to make it easier for people to implement thunderbolt on devices? I can rather easily download the datasheets for intel's processors, their chipsets, etc, without registering for a site or anything, but not the info on their thunderbolt controllers. It seems just a bit silly that I can get more info on their top of the line $3000 processors than their $10 thunderbolt chips.