I'm quite surprised in bancor, like it took 2 years to develop and to roll in the market.
Yes, Exactly recently Binance CZ announced by the end of the year they are going to launch their own Decentralised platform which helps to launch ICO under their own blockchain. Soon Binance will be leading exchange which will help the nation to join their blockchain platform.
If so, i don't think it's a good way to lead the top exchange sites because probably the DEX will turn out with no volumes again like the others. Etherdelta was a good DEX last time, but it turns out into a trash EX site.
Still, it's better to list a project token in the binance's main platform to have a huge amount of volumes.
Some people care about having a convenient exchange and also have a lot of volume. In fact, user knows a lot of decentralization because there are so many DEX that has been created in the crypto exchanges. Even the crypto currency is decentralized so I think they know a lot about it, but the disadvantages and advantages of being decentralized must know.