Error counters and error-disabled states are baked into every CAN controller implementation. The arbitration system is designed to let chatty-but-low-priority

Error counters and error-disabled states are baked into every CAN controller implementation. The arbitration system is designed to let chatty-but-low-priority messages try to talk as often as they'd like, but only succeed when higher-priority messages allow it. Short of faults that actually electrically disable the bus, it's pretty good.