Bitcoin and cryptocurrency market will improve, money laundering is a very broad topic, before BTC the money was laundered through FIAT money, the use of some technologies does not limit the fact of doing it through BTC or another alternative way.
I don't expect that with bitcoin, money laundering will stop. It won't but continue because blockchain doesn't really stop it but to expose it to the public when they search transaction. Because with blockchain, peer to peer doesn't hide the transaction.