Enlarge (credit: Getty Images) DC's attorney general has sued 14 of the city's largest landlord firms, claiming they entered into agreements with a property management software firm to keep rent prices high in a city with a housing affordability crisis. The complaint, filed earlier today by Attorney General Brian Schwalb, focuses on the multifamily landlords' use of software from Texas-based firm RealPage, which suggests rental prices based on a pricing algorithm.