In my opinion bitcoin is not comparable to other coins, it has its huge value because its the first crypto, everyone know bitcoin, many less know ether and others cryptos. Tecnically bitcoin is outdated, its slow and it has expensive fees. Ether is much better but its not very known and in the future it will have to fight against all the new smartcontract ready blockchain that are following his road
As the value of bitcoin nowadays decreasing and decreasing many people are into ether. Because in-spite of the value of bitcoin gets dump, yes it dumps a little but becoming stable as it is. But there will never be any coin that matches bitcoin as Bitcoin is the number one cryptocurrency in the world. When you say online money the first thing that comes to people's mind is bitcoin. Because bitcoin makes up the cryptocurrency in the beginning so no wonder bitcoin is the mindset of the people engaging in crptocurrency and those people who are not.