I'd like to complement that copyright is meant to increase the total amount of access to culture, knowledge, etc. Not to deter it. Furthermore i'd like to add that in the case of atleast European competition law it is not allowed to use a dominant market position in market A in order to gain a dominant market position in market B. What we see today however, is that certain dominant market actors destroy the types of businesses you predict by means of endless torrents of lawsuits ( Grooveshark for example.) while at the same time buying competing stocks such as for example Spotify. Due to the international nature of these affairs and the insane spaghetti of legal persons created and being involved; it's unfortunately near impossible to commit further investigations into these matters.