Perhaps compared to the people of this world, the people in that world would be more narrowed to the INTP nature overall, but I bluemonday is right that people will change in accordance to the circumstances. There's no way the world would have a bunch of clones, and instead the minor differences between INTPs are going to become major differences just as a matter of contrast and perspective, even if they didn't truly change their type. I think you can ever observe this happening in same type relationships.
Go to sleep, iguana.
INTP. Type 1>6>5. sx/sp. Live and let live will just amount to might makes right