CAN to PC adapters are a few hundred dollars, it isn't causing much friction.
I can imagine a container to simulate each hardware unit, a small inter-contaner lan, and develop code that way.
I think the bigger factor is that innovation in the CAN ecosystem has been lagging behind Ethernet for decades now. Only reason it's had such staying power is industry inertia.
1. https://netmodule-linux.readthedocs.io/en/latest/howto/can.h...