I believe the price of ethereum in the future will increase more maybe the price will reach that price after few months. But this year the percentage to happen that price is low because the price of ethereum is stable and slow increasing but for sure the price of 1000 dollars is possible to happen in the year of 2018. You can buy more ethereum and those peole have ethereum is better to hold it.
As long as there are investors who are willing to put money in ethereum.
Then it will continue to improve.
Not just in price but the feature it has.
But if ever that ethereum reachs $ 1,000 then many earnerbof ETH will be glad because they could exchange it in a higher amount.