You need to understand that there are a number of exchanges already which have been accumulated a number of investor's capital. Peoples hardly trust any new exchange these days as most of the newly launched exchanges have been only used for scamming peoples so that does not really attract investors or traders to trade on any newly launched exchange.

If you are successful in creating an exchange then how would you manage to gather traffic onto your exchange? You basically would have no profits by launching an exchange if you do not have any users onto the platform so first you should think on gathering some public attention and than start developing the exchange.