You can't get that kind of money out of nowhere. Their drop in profits can't be all that big or it would already be making headlines each quarter. (I doubt there is any significant drop at all) The trouble is, most people can't make this out. So people will keep thinking that they are losing money, when all these companies are doing are swindling billions more out of people.
File sharing is a bit new compared to other means of so called stealing File sharing isn't though it can be used for it. The old time friend radio is still there and it is not all that difficult to record from the radio. Who knows, mabye we will have a ban in on all recorders as well