If you are talking about landlords as in people who own apartment buildings, Norway has had a war on those for decades, primarily via making the interest paid on your mortgage being tax deductible. Even for people below the official poverty line, owning your apartment is cheaper than renting, and there is not really the concept of a subprime mortgage, you get a good interest rate.
To wit, home ownership rate is 83%. The US and the UK are around 65%.