I don't think it's a good move, why buy something when you can set up your own, there are scripts similar to Coinmarketcap and they can beat Coinmarketcap with their own games because they have a community that will follow anything they recommend, in fact, they can do better than all Coinmarketcap competitors, they are living in a word,
if you can beat it buy it.
Have asked myself over again, why would an exchange have interest in coinmarketcap if there is nothing mischievous involved. At a time CMC was a check on exchanges and coins now it will be in the hands the subject (Binance leading exchange). This is heading no where and will loss the value of CMC after sale drastically.