Z:gnu-www-ja-dat--718530-Those with a vested interest i/en

Those with a vested interest in extending copyright start the discussion by claiming that copyright &ldquo;should&rdquo; be extended as far as it can go. But the principle of diminishing returns renders this claim implausible. So they fall back on the position that copyright should be extended to maximize the rate of progress. But this too is wrong, because it ignores the existence of other trade-offs. Copyright imposes costs and burdens on the public, like any other government project. The benefit may not be worth the price.