So, now you need the identities along the transmission chain too, up to: 1+3¹+3²+3³+3^n = (3^(n-1)-1)/(n-1). It only makes the problem worse. Most of these ide

So, now you need the identities along the transmission chain too, up to: 1+3¹+3²+3³+3^n = (3^(n-1)-1)/(n-1). It only makes the problem worse. Most of these identities cannot be recovered. It is not realistic to believe that the first 3 identities in the chain will be recovered. It may very well end up being identities further down the chain. Furthermore, you will still need to try until you can find an identity in a jurisdiction in which you can sue. Imagine that you find someone at step 12 with some fraction of the coins, who lives in Japan, and who bought the coin fractions at an exchange. Are you sure that the Japanese courts will cooperate with your recovery efforts? By the way, the MPAA mostly stopped suing bittorrent users in Europe and elsewhere, because "Pirate parties" started springing up and gaining increasingly more elected seats. At that point, we are no longer talking about what the law would be, but what it should be, and things started looking bad for the MPAA. So, they backed off. Suing lots of random people on rather flimsy grounds would very soon get political too. Furthermore, as Von Clausewitz nicely argues in "Vom Kriege", war is just the continuation of the political negotiations but then by other means. So, that would be the next step, if even the political confrontation would fail. It was not that the MPAA was ever going to win.