Here's the problem: Prop 13 amended the CA constitution to prevent the state from increasing assessed property value by more than 2% a year. Landlords recognize that the real value is actually increasing faster than 2% and so increase the rent at the actual market rate. Given living costs make up the single largest force controlling cost of living, including for tax payer funded workers: police, firefighters, teachers, etc this fundamentally resulted in a massive tax cut for landlords, and more importantly businesses (who unfortunately aren't impacted by this).

The increasing disparity between taxed value and real value results in all tax payers having to pay increased income tax, which is then directed largely to landlords who aren't contributing their fair share - their properties are benefiting from services that they aren't paying for.