It is known that regulations tend to lag behind innovation and I believe as of now the urgency to regulate how cryptocurrencies markets should comply are being conditioned by the governments. But it doesn't mean it will directly lose its decentralization. Technically some cryptocurrencies especially BItcoin will maintain it. The problem is there will be a lot of services like an exchange that will force users to comply with the regulations. So if you truly care about the decentralization we really want to, in this specific aspect of exchange, dex is being developed maturely.