It is less regulation in that it gets the governmemt out of interfering with the market outcome (marginal price of dostribution is effectively zero so market outcome without copyright is zero price electeonic diatribution). The percentage sales requirement is just an easy way to force intelligent behavior by copyright holders for public libraries to lessen the market failure for the poors caused by copyright. I am open to simpler ideas as long as the outcome is copyright fuckery does not result in no provision of knowledge for the poors and only extractive pricing for a short time period that incentizes additional content creation for the rest of us.