When POS will be implemented then we be able to see how much effective this is because whales get benefited from staking as network weight doesn't allow small holders to get reward well. POS is based on the more you hold for longer period the better you will be rewarded. I was looking at market last night when I bought few more wasn't expecting to see under 0.03 ETH anymore but unexpected news hit market. It is buying opportunity anyway not everyone is holding for staking but for doubling or tripling value.