What makes a large distinction with music (or movies, games or ebooks or any other downloadable, rip-able content) is that what you are paying for is the “experience,” the unique incorporation of the “art” into your life.
Is viewing a classic painting in a free museum whenever you want the same as “owning” it? At what point does the artist’s or designer’s rights stop and the public’s start?
I think that, in general, the vast majority of content that is pirated/copied/shared/stolen is done so without regarding its affect on society, the originator, the artist or the government. It is that way, in my opinion, because many may consider themselves entitled to it if they are smart enough to obtain it. Before the internet, if you knew the right people, I’m sure a lot of music/movies were obtained quasi-illegally. Now, technology has made it simplistic. It’s easy to find “the right people.”
When posted speed limits are constantly ignored on a particular road, the government, given enough public outcry/accidents/deaths, will respond the only way it can: catch the ones it can and penalize them with fines and/or jail time. What else can it do? It can’t physically force you to slow down (at least not in a “free” society), it can’t, in most cases, prevent the actual “illegal” action.
So, back to the question of government involvement being too serious; perhaps yes, but it’s only because it cannot really do anything else to prevent the act of sharing. If art/information/content can be mass produced, someone, somewhere can duplicate it in some fashion, albeit at a possibly smaller scale. What else can government do? What do we want them to do?
If I watch a movie at a friend’s house, and that friend purchased the movie, am I not “stealing” from someone? What if it was a CD? Should I be charged (monetarily or morally) for that action? What if I take the CD or movie and watch it/listen to it for the next two weeks? Am I infringing/stealing? Should government watch us that closely for something that roughly equates to stealing an experience?