You brought up Manhattan. I responded with numbers from Manhattan. Now you move the goal post from Manhattan to NYC. Feels more like debate tactics and not like an insightful discussion, ngl.
Also you simply ignore the first two sentences of the article and you ignore the smallprint that I mentioned.
Also you state in a generalized way that real estate companies would want to make an accurate survey to invest better, which sounds like you were addressing the survey by the Corcoran Group, but why would they publish(!) their (according to you) important findings publicly. Why would they want others to invest better. Why would they hide the crucial information in the footprint? (And you didn't even admit that the numbers they provided were simply insufficient. Instead you moved the goalpost to NYC.)
Anyway.
I'm not even sure what you want to achieve except building thousands of new buildings in regular people's "backyards". Regular people who mostly don't want it. What is even your goal? What is the problem you want to solve?
Can't be solving homelessness, cause the "pretty low" 4.54% vacancy rate in NYC would solve their homelessness many times over. (NYC Population: 8.38 million. NYC Homeless population: 52,137 => NYC Homeless rate: 0.62%)
This would be on top of other policies. (NYC is spending $2.4 billion homeless over the coming year. That's $46,032 per homeless person within a year.)
(Also the homeless population number should be taken with a grain of salt too as there are some benefits to be considered homeless and its nearly impossible to verify whether somebody is really homeless or living with friends or family or just "unlisted, paying with cash".)
So why are the current solutions and the vacancy tax proposals not enough? Why do you side with giant property/investments corporations and against the will of regular people? What's even your motivation and your goal?