Air conditioning was never enough and it was always going to come to this point. The real solution is to go back to the way that things were designed up until the mid 1930s which used natural air flow to remove heat from a space without the need for electricity. People in Turkey could make or keep ice in the middle of the desert thousands of years ago. We can surely do better now if we try.

Need to use Heat Index or Wet Bulb temperature. Dry heat is not the same as humid heat - the latter contains way more heat energy. In arid regions air conditioning, or water, will prevent most heat-related risk into the future. It’s the humid regions that will suffer in heat waves.

Just need stronger air conditioners? Power em with renewable energy.

Landlords arent going to want to install solar on the roofs to absorb some of that energy. They probably think it looks ugly. Thats the real problem.