What term refers to the act of refusing to engage with other brokers or organizations?

The term that best describes the act of refusing to engage with other brokers or organizations is "boycotting." Boycotting involves actively avoiding or refusing to deal with certain parties in a collaborative or business sense, often as a protest or to express disapproval. This can occur in various contexts—business, social, or political.

In the realm of real estate, boycotting can emerge when brokers decide not to work with competitors or organizations that they believe engage in unethical practices or when they are advocating for a change in industry standards. It reflects a deliberate choice to isolate oneself from certain entities rather than just a passive form of exclusion or refusal, as those terms do not necessarily imply the active stance of protest that characterizes boycotting.