The above is an example of : Group boycotting.
Group boycotting is a term associated with real estate. It is a real estate brokerage business which involves a claim that two or more real estate firms have agreed to refuse to cooperate on less favorable terms, with a third firm.
Reasons for group boycotting in real estate are :
Therefore, group boycotting is an example of four brokers who decided to collaborate and refuse to show any of the properties listed by a new broker in the area in an effort to force the new broker out of business.
Learn more about group boycotting here : https://brainly.com/question/13894564