Yes, your right, it is the producers that have held back. But the limitations of vinyl have been one of the reasons. It can put you into a mindset.
And the market has been driven by vinyl sales.
However things are changing, and with the advent of the digital era, hopefully we could see a lot of change and innovation musically, in terms of the structure of the music etc.

however, I totally understand the vinyl limitation.
I`ve just started a new label, and it`s aimed at experimental stuff. It will be released digitally, and is already on vinyl, however for the vinyl release I have already had to apply certain limitations.