You can never say that. Project may promise to list on Binance after ICO, that does not mean that they had an agreement with Binance. However, a lot of projects promise in their roadmap that they will be listed in top tier exchange but fail to do so.
You're right, because the project before launch is the analysis and design of the project owner that is published to investors, but we don't know the extent of the ICO project relationship with some promised exchanges,
sometimes they try hard to try but the results are in vain which makes the coin owner, project team and investor very disappointed, so don't blame the project team completely.