Everyone sees/experiences this from a unique perspective, and I don't believe any one opinion is wrong or right, so this is just my opinion, but I must say that I feel quite strongly about this subject. All things physical are actually sound waves. This includes the origin of our universe(s) and everything that follows. Eastern mystical schools have known this for thousands of years, and western science has very recently "discovered" this yet again (read some current cosmology papers if you want to learn more).
As a musician I do not create the sound from nothing, or from my own free will, it is already there, I'm just tapping into it, transcribing it from the source (which apparently sounds like "oooommmmmmm") and removing and organizing bits and pieces that I "hear". The skill is in being able to hear it.
To me all the talk I see about "protect" and "my music" etc. is very fear based and hard core self-control-freakish. I do not want to treat my music like a slave in a dungeon, or a prostitute that I pimp, afraid to let it go freely amongst the public, and only letting those who pay interact with it.
Affluent iPhone/iTunes users will buy it on iTunes and you'll get your cut. Those people don't go to the Russian sites because they are scared of them. The folks that don't have as much extra income will get it from Russian and similar sites, and you get "free" fans.
Is it really "ethical" (a loaded word for sure) to become a millionaire because you happened to tap into a good song? I don't think so, I think everyone who interacts with it, ie provides a service around it (which is what the Russian sites do) should make a portion of a living off it. If you want to rake in big bucks you need to sign song writing/royalty deals, or perform it live, ie go on tour which has always been where the money is generated with hard copy and merch sales.
If someone wants to "rip-off" one of my songs, go ahead, because that means it's strong enough to stand on it's own, and I'll find out eventually if it really matters.
Hope I don't piss off too many pros, I'm an idealist :)