The LL apparently had not increased the rent between 1984 and 2003, when the tenant started withholding rent. No reason to think the LL would have started increasing rent after that, and there's no suggestion that the LL attempted to do so.
Are you suggesting that the tenant should have been required to continue paying rent, but that the LL should NOT have been required to perform necessary maintenance and repairs? If not, how else would you ensure that the LL does the maintenance/repairs?
#35