I strongly recommend Desmond's earlier book "Evicted" — houses, while assets for some, are filled with extremely real people with extremely real challenges as a result of income inequality (and, moreso, differences in household wealth). OP is totally correct in noting the importance of returns in drawing investment; OP is reminded that markets forces can yield exploitative conditions (as simple evidence, consider colonialism).
Rather, a bunch of people have incomes that are below or precariously close to the carrying and maintenance costs on the cheapest possible shelter. You can tell that this is a poverty problem and not an inequality problem because the situation is worse, not better, if everyone falls down to that level. (Example: we might be legitimately better off in a world where no one is a billionaire, because billionaires have access to outsized political power that can harm other people. Money in politics is an inequality problem. I don't think you can say we're better off in a world where no one can securely afford good housing).
And if we look at places in the world that deal more successfully with such low economic productivity, one of things you'll find is a regulatory bar for "minimum viable shelter" that's more in line with what people living there can afford.
And this is not inequality?
Honestly though, its been far more clear to me living and working in a country with much better income inequality how much the state of some places having rampant poverty and other places in the same country having massive profits. It seems like a cliché to say, but how is it that in the country with the highest average salary in the world there is so much poverty?
It's because there is a much sharper distribution: the wealthy few make far far more in america than they ever do in europe, but everybody else is better off.
The sharpness of this curve is what indecates inequality to me. I'm sure there are all sorts of fancy ways economists have quantified this, along with economic mobility (also shockingly low in the supposed land where anyone can make it)
The interventions we already have are largely responsible for the problem in the first place. Governments intervene massively to increase the cost of housing as a backdoor give-away to incumbent homeowners.
Doubling down on intervention will not work because there are diametrically opposed requirements—-politicians want high and monotonically increasing home prices but low and stable rents.
I am an aspiring real estate investor and of course have considered low income properties. The forums online are chock full of the same question and the resounding response is "Yes, on paper you can make more money, if $bad_thing doesn't happen -- e.g. $bad_thing { a, b, c, d, e ... z } happened to me or someone I know and they actually lost money over 5yr. Good luck!"
> "Defining exploitation as being overcharged relative to the market value of a property"
The ratio they've based their narrative on is called GRM (gross rent multiplier): https://en.m.wikipedia.org/wiki/Gross_Rent_Multiplier
GRM is one of many factors when analyzing investment options. Other important factors include appreciation and expenses (maintenance, property management, etc). Cap rates are a better indicator than GRM (because they include expenses) but still not comparable across asset classes due to appreciation (HCOL++) and unaccounted overhead (LCOL--).
I own both (LCOL oil region, HCOL tech region). If the numbers were equal anyone would only choose the tech region, because of urbanization and future expectations for those industries. It's the same reason P/E ratios on tech stocks are so much higher than on oil stocks. So cap rates are higher on my LCOL oil region properties (approx 6, vs 4 in the tech region). But that's just market forces. If cap rates were equal why would anybody buy in the oil region? Even if you exclude the market's predictions for the future (oil vs tech), the LCOL has additional overhead (more properties at equal value).
Reducing the conversation to cap rates and ESPECIALLY reducing the conversation to GRM - relabeling GRM to "exploitation ratio" - shows these prestigious authors (MIT & Princeton) aren't interested in answering any real questions. They're too smart to believe GRM indicates exploitation. They therefore must have an agenda.
The most interesting question raised is who funded their study, else why are they spending their time forging this narrative?