For the ICO, there's no need to do this. I think there were projects before that aimed to help the agricultural sector and economy by providing their tokens but it wasn't really effective and useful at all. It was abused and just became a source of wealth collection for the side of the developers.
Yes,this method of raising funds was very discredited by various types of SCAM, which were very common earlier, but if various guarantees of the return of funds, with competent white paper, in a painted financial plan, are provided, then this can be very good.