I think we are already seeing the effects of Ether going POS. First of all everyone is trying to stack up currently, the simple reason is because in the future when POS will be implemented, everyone will be able to receive ETH is return for confirming transactions, so instead of mining, which is currently done by big players who have the entire power centralized in their hands, the average person will be able to confirm transactions just by locking up their ETH to a smart contract. That's pretty awesome and the implications of this is some sort of indirect divident paid to holders. It's like holding shares is a big bank, instead of them paying you quarterly some dividends, you'll be receiving some ETH which have just as much value.