The world is governed by a gang aimed make to The people to know wrong about everything which possible.
Do you have any example what is possible in a FE world that the "gang" would not want the people to know about and what would make them powerful?
The gang knows the example better than us. None of us know all of the results of what we think the earth is a globe instead of a flat. I have some examples about this question but i'm not sure if it fully meet to your question. I can give examples of some of the results but don't know all of them because i'm not a member of that global gang.
Nukes are lies. This is not directly related to the shape of the earth. But this shows what a lie causes. With this lie, you can control all over the world by threatening with use to nuclear weapons.
The shape of the earth lie generally causes to continue NASA lies with it's allies. USA, Russia, China, Japan and other allies say they gone to the space. This lie causes do control to the other countries. Because the power can gone to the space can control the world. This ensures technological superiority to other countries by perception study .
NASA gathering about 20 billion dollars using clean money in the dirty work and supporting terrorism. If it not, how can USA supports the terrorist groups. 20 billion dollars mean 20 milion people dying with this lie.
If NASA and allies accept the earth is a flat, then no dirty money, no terrorism.
If NASA and allies accept the earth is a flat, then no chaos on Iraq, Syria, middle east, Afghanistan, Somali, ... etc. Freedom will increase than. Because The importance of global power countries effect will be reduced.
In my opinion both of supporting to shape of round is same with supporting to terrorism, or take someone 's freedom back, or cutting a man's head.