Using the example of the Binance cryptocurrency exchange, you can see that projects after IEO are listed on the same platform fairly quickly and are rewarded with the interest of investors and, as a result, a large volume of trading. While a regular listing often doesn't attract as much attention to the coin. Often, the coin has long been traded on a large exchange and added to a smaller exchange, and the interest of investors in this case is relatively small, compared to the first option.