Ethereum Oligarchy
If you are familiar with Ethereum's history, it had a problem with the DAO. Essentially, the contract for the DAO had a bug in it, and cost their enterprise millions and the whole thing to collapse due to bad coding. The Ethereum team then made a radical decision which was to fork the network to avoid the consequences of the hack.
Now, the Ethereum senior team is debating as to whether they should forever be the oligarchs to decide when funds should be restored due to hacks, or other large scale events. In other words, they are debating on whether they should exist as a governing body to decide if a cryptocurrency transaction was valid or not on the Ethereum network.
The idea is that they can impose a system wide upgrade as a 'fix' to a hack. source
Ethereum was developed with lack of planning
To me, this is a symptom of the flaws in Ethereum. Ideally, this decision making would happen on blockchain. If a voting process were required, then that too should exist on-chain to make all decision making processes transparent enough for businesses to plan around. By moving such decision making to an off-chain oligarchy, it makes the entire Ethereum system questionable and non-transparent. In some ways, it is the exact opposite of what blockchain is supposed to achieve.
Yet for businesses to trust a system, there must be dispute resolutions available in case of bugs or hacks.
This is why EOS is the future. ;)
Will Ethereum still go up?
If the cryptocurrency market holds, I expect Ethereum to do fine in 2018. The thing is, once we get into 2019 and businesses start looking at what EOS can accomplish for them, I expect to see many ICO's, and other projects launch on EOS.
Likewise, Ethereum will have more every-day competition arising from the Steem blockchain from the ICO-like market which will launch in 2018.
In the long-long run, I expect better competition to sink Ethereum's dominance, but this may play out over a 3+ year timeframe.