This cuts both ways though: the landlords will increase their profits when they can (when the market allows) to compensate for the risk they take on during "col

This cuts both ways though: the landlords will increase their profits when they can (when the market allows) to compensate for the risk they take on during "cold" times. The rent being paid also includes other expenses that the landlord has, like marketing of the property, that the owners don't have.