Etherium price might continue to rise in the next five years but it can not duplicate the bitcoin feats of multiple bullruns or all-time highs. Etherium is younger than bitcoin and there still a lot of rooms for its price uptrend in the coming days.
Since the price of ETH also start to raise, you can see the any value raise in upcoming weeks.Current price of Ethereum is around 310$,like a bitcoin ETH price also raising. So it may reach 1000$ in 2018 and 2000$ in next year and so on.In the fifth year, it may cross 5000$.
It will increase too ,more users tends to buy more alts for trading and we know eth is a must to do it, more will buy it and hold it for future transactions so like btc , we will be amazed soon on how it will increase.