i don't think centralized exchanges are going anywhere or even changing in the future. they may become more secure but that would be about it.
at the same time decentralized exchanges will grow but as an additional option that you can use if you wanted to go that rout and needed the decentralization. but there is still a lot of downsides to them for example you can not trade with fiat on a decentralized exchange, it still remains easier to use centralized ones for that matter.
Good points here. The crypto ecosystem is growing and the platform, services and exchanges will work in the same. One won't take over the other and vice versa. I still think decentralised trading is a cool concept but still a ways to go before it hits the liquidity of centralised exchanges. Enabling Fiat will be a big one in assisting with that.