One thought is good apartments get dozens of applications that need sorting through, and facilitation of apartment viewings. That's a lot of work, and brokers a

One thought is good apartments get dozens of applications that need sorting through, and facilitation of apartment viewings. That's a lot of work, and brokers allow that cost to be externalized to the renter. Now, whether or not it should be externalized is a different question, but brokers serve the supply side.