ETH has a clear roadmap ahead and it includes a major shift from PoW to PoS.
This might be the turning point, not only for ETH but for the whole crypto scene.
However, BTC will keep the current dominance for a few year more.
After that, who knows?
I think if ethereum will overtake bitcoin, this won't happen within 1-2 yars. We need much longer time for this to happen, probably around 4-5 years. Plus, ethereum's upcoming pos transition should be successful for this.