The big question then is why it doesn't already move against the market? Binance is earning money on a daily basis and BNB should do its own thing, but as we can see it doesn't. Everything is tied to Bitcoin for whatever reason.
That is a very natural thing to happen because Bitcoin is the first coin in the crypto space so all Altcoins must be based on it to determine its value in the market, and what it looks like is also very clear that when Bitcoin starts to correct, then Altcoins will also experience correction in some percent.