Investing in the IEO may not be able to give you a lot of profits, just because the project is partners with binance and uses the IEO, not necessarily everything will be guaranteed success and legit.
In 2019 I think the interest in investment in crypto has decreased and lost confidence.
whatever type of ICO, IEO, STO, ITO or others if the project has no clear future, in the end just like the project in general.