95% of the altcoins will fail regardless of what bitcoin does, it's those 5% you need to watch out for.
ETH is already 1/4th of the value of bitcoin. Dash is also a large contender.
Bitcoin is not invincible, and they should not act like they are.
Just curious, but how is Bitcoin acting like "they" are invincible? Apart from the few individuals on whichever side of whichever argument that can be conjured, I think most of us in crypto see any kind of dominance from any coin as ultimately good. Bitcoin grows, alts grow. Altcoins grow, so does Bitcoin.
In general, you would be right. Bitcoin IS like a large star with a massive gravitational field. When it grows it pulls others with it. In the long term.
In the short term it burns them to crisp as speculators sell their bags to participate in the formation of bubble.
We could observe that clrearly already back in 2013. First in bull market. Then in reverse during bear market. At first altcoins skyrocketed as speculators left bitcoins near apex and bought stashes of alts. Entire cryptocurrecncy market ballooned by then.
However, once it was clear that Bitcoin, the star was in for downwards spiral, all altcoins followed suit, many crashing even harder as their price was so much easier to manipulate.