It's number one because it's the original crypto used by exchanges. People think it's old news if it's not skyrocketing. It doesn't matter. A stable btc is good for altcoin traders as the point is to make money in Altcoinstalk anyway. Even if btc goes back up to 20 how much more can it grow beyond that. 30? 40? Who has that kind of pocket change to risk if it  can drop by 50% in 2 weeks? If you want mainstream acceptance you need a stable btc.
And eth is what 400 something right now? Overtake btc? 😂 And it's not a competitor. They complement each other. One is the mother of all coins and the other a token. Both play an important role in crypto