Bitcoin dominance increase to almost 55% few days ago and now that the market looks healthy again with alts pumping again. The dominance of bitcoin went down to 52.6% as of now. Bitcoin is near to hit $6,500 again and for sure few days from now we'll see $7,000 soon. I don't think that all altcoins will die if bitcoin ETF goes on the track, some will survive.
This is just a cycle actually. when Bitcoin is down everything else is also down as there remains to be no decoupling from the King of Cryptocurrency which is of course Bitcoin. Where Bitcoin is going the res of the gang has no choice but to follow. Now, having said that, I think many of the projects already in the market will eventually die a natural death and it has nothing to do with Bitcoin it is because they are losing the interest of the market and one big reason is that these project got no traction at all and no real-world uses. Let's hope for the best that come 2019 the market can be better for the whole industry.