You can eliminate murder by making it legal too ^^
You can make prostitution, porno, weed, gay marriages legal & have some benefits (like taxes) from it instead of prohibiting it.
Segd are you even reading what you're writing there?
My English is so bad that you don't understand it?
Again: you could ban half multiaccounters right now. Half will stay in the shadow because they use proxy\relatives.
But next time caught cheaters would be just more careful. & in Strat 5,6,7,...,9000 there still would be a lot of multiaccs.