I think you’re misattributing things here that I think can and should be explained by wealth inequality. Big box stores don’t kill small towns because they destroy competition, they kill small towns because some percentage of money spent at a big box store leaves that small town. It’s not the lack of competition that kills small towns it’s the fact that after those small town businesses close less wealth exists in the hands of people in that small town. There’s less money moving around in that town because a portion of it is being siphoned off to big box store profits which go to shareholders and out of state C-suites and the likes.

Yes, higher density means more taxes are raised per area which means it’s easier to spend on infrastructure in high density areas but you’re missing the point. If wealth was distributed properly we’d have enough money to build all the infrastructure we want comparatively almost regardless of the density of the population. As wealth inequality grows less taxes are being paid to the government in high density and low density scenarios. As wealth inequality grows the more the government is in debt to the wealthy and the less it can spend on vital services. There’s enough money in the system to pay for Internet and hospitals and rail and school to service every person in the US but the money isn’t held by everyone, it’s held by people who have those services covered where they are and so they don’t care if they drain the rest of the country of those things. Wealth inequality explains why small towns are dying because it explains why they can’t afford to stay open, stay profitable, stay connected, stay healthy.

And to circle back around to your original paragraphs, I don’t care how much people like living in big cities they can’t live there on vibes alone. They have to go where the money is, and you best believe when Boeing opens up a new plant in a city they put a whole lot of money into that city (ignoring city special contracts for a moment). I like living in a big city, I want to move to an even bigger city, I’m not because I don’t have a job there right now. I live where the work is. And yes, denser cities means more jobs and more opportunities but that only gets less true and less meaningful the more wealth inequality grows. If I can’t afford to rent a flat in 10 years, the same way I can’t afford to rent a house today then what’s the point? If my job doesn’t pay me meaningfully more in 10 years because stocks have to go up (please read that as wealth inequality) then what’s the point? Cities don’t create jobs or high paying jobs because money moves fast, it’s because that’s where the wealth is. Look at any major city in the US (at least) and you can find the increasingly small list of increasingly massive companies that have offices there and you can trace the money. If Kansas city lost Garmin or Hallmark they’d feel it, if the government went further into debt and had to slash services Kansas City would feel it, if one of the massive freight companies left KC would feel it. The point is cities are built on wealth and the movement of wealth, but if it increasingly is drained out of those cities it will be harder and harder to sustain those cities. It won’t matter where people like living, they’ll have to move to where the money is.

I really do think looking at where money comes from and where it’s going is critical to understanding why the standard of living is declining while there’s never been more wealth or productivity in history. We could all own homes, all have healthcare, have highspeed rail, higher education, if only the rich didn’t exist. We have to tax them out of existence and build a system that works for the overwhelming majority of people instead of the 1%.