I do not think that investors will be able to withdraw their money so easily if they wish. Most likely, the smart contact will be tied to certain parameters of the project according to the white paper and the Roadmap, and in the event of non-compliance, investors will be able to return their money, or some of the money.
Well, I do not know ... I still find it hard to imagine how this will be implemented in practice. I understand that in the current situation of an ICO there are drawbacks, but everything is simple and understandable. And how what you say will be realized I do not understand ...