as we see, the price of Bitcoin starts to grow and soon the price of Bitcoin will reach $ 6000 or even more than that, but what is happening now is the price of other cryptocurrency does not increase when the price of Bitcoin increases, because usually the price of other cryptocurrency will increase also when the price of Bitcoin increases, so what do you think is happening now? does the price of Bitcoin not affect for the price of other cryptocurrency again?
I think the main reason is that, people are pulling their assets from Altcoins and dumping it to Bitcoin as it is increasing. When Bitcoin starts to drop, we might see people who will pull out from bitcoin and dump their assets to alts.
Yes saw something very similar to this in 2017 , xrp rocketed and alot of other alts in december right before btc got to its peak and started to drop when ppl where moving btc to alts instead.