Do you think we will ever have affordable housing again in our lifetime?
Considering how crazy expensive accommodations have become the last couple of years, concentrated in the hands of greedy corporations, landlords and how little politicians seem to care about this problem, do you think we will ever experience a real estate market crash that would bring those exorbitant prices back to Earth?
Given that most modern construction has a mortgage with some bank, a "Mass Death of Owners (and their descendants and families)" would just make the homes pass on to be property of the bank.
Interesting fact, the Black Death in Europe gave an opportunity to peasants to get a better life. The ruling class did what the ruling class always does, and try to prevent the peasants from getting a better life. Thankfully, the peasants realized "Fuck this. We have power and we're going to wield it."