It's not for all of the exchange sites but yes for all of IEOs that launched on binance.
Thanks.It's a Lottery.
Here is a Screendhot of how the binance Lottery system works:
Under the following link everything is described in detail: https://www.binance.com/en/blog/316491046311071744/Update-to-the-Binance-Launchpad-Token-Sale-Format
Thanks, you even added a graphic content for that answer. I can see that Binance is seriously using their coin for this kind of new investment scheme. Overall, the winner for this kind of system will always be Binance. And the people that can sell at the earliest would always make profit before everyone dumps the project. I find it risky and also an investment of luck base on that kind of system on who are the eligible investors that can get in to an IEO on their exchange.Here is a Screendhot of how the binance Lottery system works:
Under the following link everything is described in detail: https://www.binance.com/en/blog/316491046311071744/Update-to-the-Binance-Launchpad-Token-Sale-Format