Yes, but they are still a problem in the game.

The big ones Coinbase and Poloniex do manipulate the market in a bad way. They still block people accounts and delay with intention lot of transactions. Also make harder things to work for small people sometimes.

Let's hope all that will go away with time.

If they want to be good at all things, that's the place where they should start, i think. Along with this kind of changes.

Cheers