“But doesn’t this cost more and take up more space than just putting them side by side and not having the stairs? And the stairs are even dangerous for the person on top!”
“Ah, see you’re not thinking about how fun it is to shit on other people.”
It works as trickle down housing as well. They want to build luxury apartments, price fix them, and then say that in 20 to 30 years, you might be able to rent them because they're cheaper.