My layperson opinion, based on personal experience as well as reading and observation:
Empathy is something people learn from observation and practice. OCPD patterns generally keep a person in an ongoing survival mode, where the focus is at a crisis management level, which is very different from the level at which humans practice and develop empathy. The development of empathy comes from a place of relative peace and acceptance with oneself and the world, and this generally isn't a place the OCPDr is in.
We (ocpd'rs) can develop empathy, just as any other human has. But we need to first accept that we've spent our lives in this other mode and haven't developed it, which requires accepting that our thinking and perspective is, & has been all along, distorted. Which requires letting go of a lifetime of engagement with these beliefs and ideas that we have in our head and starting over to develop new ones.
So it's certainly not the case we can't learn it. But it is the case that there's a lot that needs to come first to get ourselves to a place where we can allow ourselves to.
Thank you for this. Crisis management mode is my OCDPH's natural default setting. It is exhausting for me. I'm sure it is for him, too. He enjoys very little in life due to always being in crisis management. The weird thing is, he has an abundance of empathy for animals but never for humans other than his mother.