Shorter copyright terms will mean more long term innovation in pretty much any field. Once upon a time we rewarded creators while also providing a better future for society as a whole through public use of created works after a reasonable period of time. Those guidelines were drafted long ago and have since been distorted, largely by corporations and not sole content creators.
There's an oft repeated non-sequitur by corporations (you see it a lot in the banking world) that drastic things will occur to the world economy if things like copyright and regulation are examined but it's just a wealth protection scheme.
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