There is simply far too much housing inventory for companies to own absolutely everything. There is also the prospect that if prices climb so high that the middle and lower class residents are priced out, homeless encampments will take over absolutely everything, while unoccupied inventory slowly deteriorates. I am not a market analyst, but if you look around even at some of the most prestigious retail neighborhoods, the effect of engineered inflation on the housing market has already displaced so many people that even the wealthy are not safe in venturing out to shopping districts and nightlife spots.
It's a self defeating cycle that needs to be reigned in. No matter how many fences people build around their homes, and how much security they hire. If the majority is forced into desperate living situations, they eventually revolt and redistribute wealth.
It is really government's responsibility to reign this in by lowering income taxes, taxing the rich and corporations properly, by reinforcing fair wages, and in many other ways, but even people in those positions of responsibility are asleep at the wheel of accountability, and also lining their own pockets.
Eventually, we as consumers need to stop contributing to these cycles of hysteria by not buying those overpriced homes, and working to develop the communities we're currently in. Individuals need to avoid greed impulse as landlords and stop dramatically raising rent and for companies to prevent artificial price inflation too (gouging), understanding that it will create a better eco system over time for us all.
Globalism of information and companies has led to harmful results in many ways, it has also driven us to a point where price controlling monopolies have far too much power, and too much overhead to keep costs down, and to keep world-wide distribution and value up for goods reliably.
There are literally thousands of overconfident investors now (many faking success and many that inherited their wealth) sitting on vacant properties, failing companies, and losing money on business ideas, yet posting about their extravagant lives and fake symbols of their business skill along with terrible investor advice on social media.
Along with Crypto, NFT, and investment scams that are regularly promoted by big industry, this drives the greed and ignorance that in turn affects current investment and ultimately business failure. We need to call this practice out, or face experiencing the market chaos and even deeper crashes that will indeed come.