Part of this is that lawmakers don't want to be too agressive. If they ostensibly solve the privacy dilemmas related to facebook, they'll have to find a new outrage to parade out in front of voters and that requires them to learn about that new outrage as well. Instead it's a better strategy to milk an existing outrage until there are diminishing returns and only then move onto or manufacturing the next outrage. It's legislative theatre for the sake of getting re-elected term after term.