Because the exchange places are always more profitable. So now there are too many bad exchanges and almost no one exchanges any coins on it.
in fact more and more exchanges will be better, because in trading more and more choices will be more competitive prices offered, so bad things that are always a scary thing, can be avoided because the future market will correct coins that have the opportunity to rise, always think forward, always looking for gaps in every trade that we have so we can get profits.