I'm very torn over this subject.
On the one hand, I am a "hyper connected" type of person. I find it very convenient to launch YouTube music on my smart TV and listen to music that way, without the need to switch discs.
On the other hand, I own all the music and movies that I love on physical media. I own a UHD (HD 4K blu Ray) player , and I'm sad to see that very few new releases come. Some new movies are released, but the back catalogue (older, valuable movies) can be counted with one hand. They did Back to the Future, but that's more and exception. Last week-end I was invited to a friend's house, I knew he was a movie lover, I came with "intouchable" on UHD as a gift, only to realize that he didn't even own a player any more, even if he has a giantic screen!
So, yes, a bluray release of Dortmund 80 and Wembley 85 would be very highly appreciated. Nonetheless, the YouTube releases are better than nothing - they give these legendary concert an official status and feel, and it makes me happy. I consider them official releases, despite that very regrettable lack of physical releases.