We don't need it, but people are compete each other to make the best exchange in this world.
Just like any other business, the costumers don't need new store, but the store owner are making the cheapest, fastest, and best services
For the sake of competition,we would really able to see new exchangers would pop out and come to think that this is a good business once you hit it up.
Good profitability for its owner if you able to get some volume but all will depend on how you do introduce your exchange/service.Sometimes it do really
mix up some luck when it comes to success,it would either you would boom or you would flop.