People and politicians have very little imagination. They can't believe a society can flourish with universal knowledge for all. So they have to be shown, first that the world isn't going to be destroyed if knowledge is free, and second that the benefits to society outweigh the benefits to a few corporate leeches of keeping knowledge locked up.
Politicians don't really care if a society can flourish. They sought power either because they have some kind of ideology they want to ram down everyone's throats, or because they saw corruption and wanted a piece of the action - or both. Leeches won't every prioritize common good over their leeching, obviously, and ideological fundamentalists don't want the society to flourish, they want it to follow their ideology, and if anything things improving will make it harder to accomplish that ("if we let people get used to Obamacare, we'll never get rid of it"). So does an educated population, for that matter, so they have an even greater incentive to try and censor whenever they can.
That said, bypassing official controls and making universal knowledge a reality is certainly a good idea. It won't change the minds of politicians, but it'll make them powerless to stop it, which is good enough.