The power to block or distort information without our informed consent and without proper consumer disclosure, places undeserved burdens upon the rest of private industry. The only way to control an otherwise free person is to control the information they get. And censorship, once established, can never again be known or judged to be good or bad, as the information needed to make that decision is no longer free and available. Especially, as experience has shown it is unwise to rely heavily on computers. Any such labeling would be necessarily simplistic.
Some proposals actually propose to copy the current U.S. TV-ratings system fiasco.
There is accountabilty. Parents could sue for failure to properly meet any promises to limit content. Control is more precise and not just crude government groupings. Conceivably individual profiles could be used for family members having varying maturaties, tolerances and tastes. This system would not be limited or locked in by legislative fiat, allowing it to maintain its usefulness indefinently, easily and rapidly adapting to the market.