The gov't is ran by corporations....literally.Digital is better in everyway when it comes to content delivery. What does that mean in laymen terms? With all tv digital, tv can become like the internet where the channels & content can become unlimited and accessible at a much faster rate than before. Think of being able to download movies straight from (pick your store) then watch them anytime you want. Since the major tv networks still run stuff they will control the access and content. Right now the internet's access is controlled but its content is only loosely control – highly controlled by some countries. Does this explain the big push no not yet but it does explain why all entertainment corporations would lobby to make the government pass laws (which they've already done) to force the issue.
To understand and see a similar push you need to look no further than the digitizing of music. At one time all music and all music equipment were analog which means only a very small group of companies controlled music. This by definition of capitalism isn't a good thing. Then CDs come out which are quasi digital and the same happen with the music equipment which was analog and digital. But now you have people putting music on there computers and transferring it across the internet at lightening speeds and some people now play majority of their music on some type of hard drive rather it's on a actually laptop/desktop or iPod or another mp3 player. Here in this example the push is still going towards digital. Because one set of lobbyist are stopping the government from passing laws beneficial to groups like the RIAA, who hate the idea of digital music, but can't get other companies nor the government to help stop it. In the mist of lawsuits by the RIAA, Apple one of the biggest companies in ameriKKKa openly was against them and released the iTunes & iPod which encourages the spread of digital music. There are many others that followed suit against the RIAA wishes.
So when it comes to a push by the gov. you know there is a lot of money involved and companies lobbying heavily to get the money off of consumer products.