Because alt coins have no value outside of their link to bitcoin.
Look at coins like Ludena Protocol though that have their own internal functional economy and do not rely on the price of bitcoin. these are the types of projects that wil succeed in the next altseason
I would say this for 99% of altcoins, but not all. I mean, some coins are even so unique that Bitcoin has a link to them in the opposite direction,,, for example Litecoin, which is always the testing ground for things that Bitcoin is not ready to do yet!
Same here, we are just in one market so I guess bitcoin will still dominate and any altcoins will just follow.
I am not familiar with Ludena Protocol but I am certain if it's profitable right now, it will not be stable and eventually it will dump, by the way I can't see it in CMC, so probably the project GucciMan14149 has mentioned does not have a good trading volume yet.