Yea, that is correct. I typically put together the solutions for new systems, including security. I give the sales team part numbers and hours for security software and related hardware. They then add that as an option to quotes. No principal automation engineer wants to take that on and no IT want to be involved. Also, when money is tight that’s an easy target for them to pass on.
Luckily I’ve pushed enough over the years that we at least include A/V software as mandatory.
I’ve been able to carve out a nice space within my company bridging the IT/OT divide. It’s been particularly good recently since the bigger companies are dictating good cyber practices, but rely on integrators and vendors to implement.
I don’t think there will ever be an out of the box solution unless a system stands on its own, which is becoming increasingly harder with modernization and reliability efforts. Add on top of that privileged access, remote monitoring and support, automated (kind of) patching, etc. you have to interface with the IT side a bit.