[JoshTriplett]

CAN has desirable electrical properties (e.g. hardware-level prioritization) if you have life-critical devices and non-life-critical devices on the same network. But it's painful to deal with from a software point of view, compared to IP-based protocols, for anything that doesn't require the properties of CAN.

[cyberax]

Industrial Ethernet (PROFINET) also has priorities and bandwidth reservation: https://en.wikipedia.org/wiki/Profinet#Technology_of_Class_C...