A licensee may not be deemed to be an agent or subagent of or to have a brokerage relationship with a common source information company solely by reason of a licensee’s participation in a common source information company. A licensee may not be deemed to be an agent or subagent of any client of another broker solely by reason of a licensee’s participation in or use of a common source information company. A common source information company may not restrict access to its services to any licensee solely based on the size or type of licensee.