For me, I don't think that Ethereum can beat Bitcoin as the Number One in the crypto market, it's because Bitcoin is getting more and more bigger each day because there are more investors coming every time and Ethereum still has a lot to improve in their blockchain and their security features.
BTC is the most trusted coin across the globe and when you enter into cyprot market the first thing that come to your mind is BTC.BTC community is strongest than any other coin.Right now ETH can not overthrow BTC but in future if ETH emerge with something innovative having superiority over BTC then certainly it would outclass BTC.Nothing is permanent in this world,one has to replace to lead one.