Whatever you've heard is not correct. Although the more a company grows, the more volume is transacted through it, which may ultimately result in slightly increased fees, but this is not the norm. some exchanges still charge below 1% per transaction.
In spite of the fact that the more an organization develops, the more volume is executed through it, which may eventually bring about somewhat expanded expenses, yet this isn't the standard. a few trades still charge beneath 1% for every exchange.