slartabartfast
Copyright might well be part of the problem. The original song (basic melody) is owned by the author of the song, and in order to publish an arrangement, the arranger/publisher must get permission from the original author to create the transcription or arrangement.
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The best one yet, though ... is this ... and it was in "Behind the Music" with The Police, when Andy showed that one song sounded terrible when he played it out of his stack, but it came alive with the stack and effects on it!
The Edge, showed the same thing in the film "It's Gonna Get Loud" ...
What you even see "transcribed" is actually an "approximation" since what Andy Summers is actually playing, in many cases, is not something that you even want to learn or consider, at all!
Tricks of the trade? How's he going to copyright, compressor at 1, 2, 3 and 4 different settings, flanger with 3, wow with 3, chorus with 5 different settings and so much more that we can not even describe it on the sheet at all!
To me, this is the best/worst part of a lot of modern music ... you don't even know that the actual notes being played ... are terrible if you were to hear them naturally!
And even worse than that ... the new/inexperienced musician doesn't even know about that ... or consider it, as opposed to a classical musician within an orchestra and such. Even jazz is guilty in this area!