Why is the absence of a consultation law the worst combination for an investor?

With no law, every project is litigated case by case through amparo; the Constitutional Court (CC) orders consultations under rules it improvises judgment by judgment,… and the same court holds that the consultations communities do organize are not binding. The result is a certain obligation with an uncertain procedure. Context that explains why the conflict is judicialized and runs hot: public distrust of the courts is estimated at 88-95% (CIIDH).