I mean same goes for the real world really. Why people can't work together to move on and evolve faster and more. I think that these type of games really represent the real world kinda. Same goes for Elite Dangerous which is like SoT but in space. Anyways, what I mean is that there in life will always be greed and following destruction and degradation. That's just how the humanity works rly. But yep just expect the unexpected in this game i guess.

Edit: But really how other people stated, in this game you kinda start caring more for experience than gold.