Most altcoins are dependent on bitcoin for now and I think it is from that point you are coming, but if you look at binance, binance has been kind of independent of bitcoin to some extent, although bitcoin bull run generally do make the price of most altcoins increase, but binance getting to this value was actually by their projects.

They have already established solid projects that will always make both the old and the new investors to often demand for bitcoin and not one time demands like some coins. There are some coins that I have only put in money in their market once, and that is because I only see them as being useful for investment, unlike some coins like binance and bitcoin that serves the purpose of being used as utility coin also.