I don't think the successful IEO will lead ethereum to increase prices, the story of the IEO is completely different from the ICO in 2017. if the ICO is raised primarily through ethereum, the IEO is no longer like that. The IEO supported by the exchanges, they all have their own tokens, Binance and Houbi launch the IEO with token HT and BNB. so the IEO will not affect the price of ethereum, if not not affected.