Now with Peercoin, if you want 51%, you have to buy them, you can't just "collude", since no one will listen you. Now if Peercoin's marketcap is same as Bitcoin, tell me which way is easier?
And how exactly do you *know* that their initial distribution wasn't concentrated such that *one owner* (under various aliases) actually already has > 50% of the stake?
Distribution can be done transparently, a mixture of PoW for the distribution phase, and also direct currency buy in would work.