while Ethereum is very popular, it's not going to get close to Bitcoin
"Never underestimate your opponent" - Sun Tzu
Exactly! However we'll see what will these people that are migrating to ETH will do when they saw that bitcoin is getting back up again with loads and ready to climb up again to the uphill.
Sad for all those people who moved their Bitcoin into Altcoin 
Just like what I'm saying, they will regret what they did but as long as btc's price is still low they can still had chance to come back again.