I think it would be very good if some kind of fund was created at the state level that could guarantee private investors a refund if the project fails, or if something goes wrong as planned. This would be an ideal solution to this problem. However, most likely our states will not make such sacrifices for the sake of investors.
If, for example, the state received some percentage for such activities, probably would try, and on the other hand, not every country can be entrusted with the case, if only an international organization to avoid manipulation