The U.S. Department of Justice (DOJ) has filed an antitrust lawsuit against RealPage, alleging that the software company conspired with landlords to inflate rental prices through the sharing of sensitive data and algorithmic pricing strategies. This bipartisan initiative, supported by eight state attorneys general, claims that RealPage's practices have resulted in higher costs for renters in Washington and Arizona, where residents reportedly pay up to 12% more than fair market rates. The lawsuit marks a pivotal moment in applying antitrust laws to technology, accusing RealPage of facilitating collusion among landlords to maintain a monopoly over rental pricing. Attorney General Merrick Garland emphasized that this case highlights how modern practices can violate longstanding antitrust laws. RealPage has countered the allegations, asserting that they are unfounded and do not reflect the responsible use of their technology. The outcome of this lawsuit could have significant implications for housing affordability across the U.S.