I'm still curious about one thing; two-sided market? Are you using this phrase as the simple way to say it, or do you really think it's a two sided market. I've always seen it as a multi-sided market.
When I think about all the specialized skills (and equipment) that goes into music, both recorded and live performances, it always seems to have a mind boggling number of sides. Worse yet, the various sides tend to be in competition (labels versus artists, consumers versus distributors, sound and instrument equipment manufacturers versus ...). Though some truces and alliances exist, each of the many sides is vying against the others to get paid.
I recall reading one of your very early blog posts where you mentioned the vast amount of effort you put into advertising and marketing your own band, and this gave you the idea for earbits. Essentially, the marketing and advertising you did for your own band was in competition with the similar efforts of labels/promoters for other bands.
Am I wrong in thinking of music as a highly complex, intertwined, multi-sided market?