Who - other than the 'industries' themselves - cares one iota whether they'll make 'tons of dough'? There is no 'mystery' here - there are several working models out there for revenue-generation that negate a need for these obsolete MPAA/RIAA clowns.
In respect of musicians, artists make the majority of their money from gigging & merching, while it's the corporate leeches that make their lucre from CD sales. It's also widely accepted that filesharing mp3s raises public awareness & can actually _generate_ income; high-profile examples being Radiohead & NiN.
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