There are still exchanges out there that has good reputation and most IEOs out there can be listed. It's like a kick starter to get you going on the market. When when the token's price pumps, then you can list it to another exchange. Being flexible on the market is key for success.
As long as the IEOs are not launched on the low tier or even scam tier exchange site like p2p, latoken, coinsbit, chainx, vindax and that will have a good future.
A new listing can't be done instantly and that needs a lot of consideration from the new exchange site.