Binance attracts serious attention as a stock market. A big platform that gets stronger with new projects. Alongside this, BNB and other major coins have formed some level of resistance. This resistance also gives altcoins the opportunity to pump.
What you wrote made me realize something. Binance is so huge, that iti s basically a stock market broker like a bank. Like you call up your broker and tell him that you want to buy some apple shares, or berkshire hathaway shares and what not, here you could do that basically the same thing but instead of stocks, you do it with crypto.
The logic is the same thing, there is nothing different, both takes a cut from your investment purchases, but binance does that 100000x times bigger compared to any one big place. Certainly they could get into other stuff as well if they wanted to, what stops them from starting a stock market company as well, not directly related to binance, but owned by the same people basically.