I am not buying this PoS concept. For one reason, human society does not favor socialism in the past. If you can get paid without effort, then nobody will end up working. If you want to succeed, you work harder than others. so far I am wrong with pos coins, they seems to be hold on longer than pow coins, but we will meet in the finish line. When satoshi create btc, he actually had an economic model in his mind(the distribution cycle is much better than mec or the rest), those pos, has nothing comparable.