Can Real Estate Agents Be Forced to Use Certain Vendors?

We have seen it many times…the managing real estate broker or office manager pushing hard for their agents to use certain vendors. Myself, have dealt with this when an agent says, “Wade, sorry…I wanted to send you the business but my office manager told me to use the Title Company where our office has the “relationship.” Ahh…the “relationship.” This is a very important aspect of this topic and we will address it a little later. In my experience, real estate brokers and office managers are there to help, inform, educate, and protect their Realtors. They are the greatest safety net and in many cases, a reason as to WHY an agent hangs their license at that particular real estate firm. Vendors however, are separate companies from the real estate brokerage and offer related services to the Realtors, such as Mortgage, Title Insurance, home inspection, technology, etc. With that said, can real estate agents be forced to use certain vendors?