There is a thread here that says Binance wants to buy Coinmarketcap for $400 million, it' a jackpot deal for Coinmarketcap it';s not really that expensive to set up a site like Coinmarketcap and all they have to do is to allocate funds for marketing and they can even beat Coinmarketcap and all the other with their marketing.
it IS expensive to reach coinmarketcap status. and they are currently earning a lot of money from their popularity from the advertisements they post on their website to all the ICO scams they endorsed and all the control they have on which coins be on their arbitrary list of coins.
i am skeptical about the number you reported here but it makes sense that Binance is trying to increase their influence on the altcoin market more. they have been centralizing things for a long time now.