As far as I know the exchanges are now suffering losses, trading volumes are decreasing every day, and after all, the exchanges' earnings are commissions to save the situation and not lose potential profits, as far as I know, the exchanges are going to reduce the cost of listing, however, these are just rumors .
I hope these are true but there are new exchange coming out of ICO that are offering free listing for a limited period of time, and some ICO can afford to list their coin now that the price is much lower because of the market condition, I'm still surprise that some coins prefer to list their coins when market condition improves.