In order to answer these questions, you need to find why and to whom it is beneficial, as well as understand what will happen if access to hidden information (knowledge) is available to everyone.
So what do you think, is modern mankind ready to possess this power, and “change the face of the world” does not mean the Earth, but the Universe. Will the civilizations that have already achieved that they can possess this power, the Children of Light, as Thoth calls them, allow us to have this power, especially since they obviously provided us with this opportunity, but rather those of whose descendants we are. Obviously, we will be given such an opportunity if we can not violate the law of BALANCE.
And from this we can draw two conclusions why we are not allowed to the ancient knowledge and finds confirming our antiquity of existence:
1. These are civilizations that have significantly outstripped us in their development and which have already tried to give us this knowledge, which control us and our development. Light.
2. These are the descendants of those who tried to use this knowledge in their base interests and survived after a global cataclysm that led to the death of civilization, and amassing strength to achieve their base goals, seizing the leading positions in the modern world. Dark. Thus, it is not beneficial for the light that knowledge would fall into the hands of the majority ahead of time, and the dark do not want people to know at all. Therefore, all discoveries in archeology that do not fit into the invented picture of the development of civilization are concealed or ridiculed.