I think you are right in general here in this comment but I am not sure if you are right on this bit.
Peterson might be slightly overstating the number of sociopaths (others put it at more like one in thirty).
Those people have to fake it (if they can be bothered; it doesn't seem to hold people back from the highest office if they don't)
The vast majority of people with noticeably low empathy, though, simply haven't ever been taught how to nurture that small seed of empathy, how to use it to see the world, how to feel the reciprocal benefits of others doing the same. How to breathe it in and out, basically. It's there, like a latent ability to sing or draw or be a parent, it's just that we're not good at nurturing it specifically.
Schools teach "teamwork" instead, which is a lite form of empathy (particularly when there is an opposing team to "other")
I was never a team player, but I have learned to grow my own empathy over the years from a rather shaky sense of it as a child.