The suburban doom loop, basically, though that phrase makes it sound too inevitable

I'd push back on the infrastructure part of this story, though. The reason nothing gets built in Buffalo even at fire-sale prices isn't just cultural inertia or whatever the European comparison is measuring. It's that the water and sewer systems downtown are genuinely, expensively broken in ways that make development there a nightmare. I spent three years helping a county in upstate New York deal with a combined sewer system built in 1910 that serves maybe half its original customer base. Every rain event overflows raw sewage into the creek. The pipes are clay and cast iron—actively collapsing in places. Fixing it costs maybe $200-300 million for a region that can't float the bonds. So a developer looks at a beautiful $80k Victorian, runs the numbers on what it actually costs to connect it to working infrastructure, and walks away. Then you get the inverse: sprawl development on the periphery where you can run new PVC lines and work with systems designed for growth instead of decline. Those systems are cheaper to operate *now*, even though they're catastrophically expensive to have built in the first place. Hamburg and Lyon got to maintain their cores partly because they never had the simultaneous combination of massive disinvestment *and* aging infrastructure designed for 1910 volumes and 1950s maintenance budgets. You can't retrofit your way out of that cheaply. The houses are salvageable. The systems underneath them are the real problem, and nobody's accounting for it when they marvel at how affordable the real estate is.

I'd predict the regulatory environment gets tighter, not looser, before any of this reverses—and that'll paradoxically make the problem worse in places like Buffalo. Here's what I've watched happen: a city council sees a derelict building, gets excited about redevelopment, then layers on new requirements. Historic district review, parking minimums, environmental assessment, accessibility upgrades to code that weren't in place when the building went up (so you're essentially rebuilding parts of it). All sensible individually. But on a $200k building that someone wants to rehab into five lofts, suddenly you're carrying $50-80k in compliance costs you weren't budgeting for. The spreadsheet breaks. The project doesn't happen. The building stays empty another five years. The tighter prediction: Buffalo won't get meaningfully denser because the regulatory cost of using cheap land is now higher than the land itself, and it scales worse the smaller your project. That's almost the inverse of your capital flight point—it's not that people want to leave anymore necessarily, it's that the mechanics of actually building something *there* have become perversely expensive relative to starting fresh in a newer suburb with clear compliance paths already known. Cities will keep trying to incentivize development and keep getting confused why it doesn't stick, because nobody's actually counting the cost of uncertainty and regulatory friction. Europe's regulated too, obviously, but they've had longer to smooth out those paths for infill work, and their developers are used to working within tighter margins anyway.

The infrastructure piece is what actually locks this in, though. I watched it happen in three different cities across the 1990s and 2000s. Once you've got that suburban ring absorbing the tax base, your core loses the revenue to maintain water mains, sewer capacity, street grids. So the housing stock might be physically salvageable in theory, but you're actually buying into a place with aging infrastructure that the municipality can barely afford to keep operating, let alone upgrade. A Victorian brownstone is only cheap if you can actually get water pressure and don't need a new sewer line. The European comparison breaks down here in an important way. Those cities maintained central infrastructure investment because density was never negotiable—you couldn't just build outward as a pressure release valve. In Buffalo or Cleveland, the permit process actually *enabled* the hollowing out. Zoning boards approved endless low-density development because it shifted growth costs to the periphery and made core investment look like waste. I've seen the math on those transfer station locations and landfill capacity—they were designed for the 1970 population projections, then never adjusted downward when everyone left. You end up maintaining excess infrastructure for nobody, which is another tax burden. So yeah, the housing is salvageable. But you're not really buying architecture. You're buying into a municipality that's still operating on the assumption that people will leave, because that's what the fiscal structure now requires. The price stays stupidly low for a reason.

You're describing the mechanism perfectly, but I'd push back on one thing: you're treating the regulatory difference as almost cultural when it's actually structural, and the structure is doing a lot of work. The car-dependent sprawl didn't just happen because Americans preferred it. It happened because post-WWII zoning explicitly *forbade* the mixed-use density that European cities maintained. Buffalo and Cleveland didn't lose their centers because people suddenly preferred strip malls—they lost them because you could legally build a shopping center on a greenfield 10 miles out, with free parking mandates, while simultaneously making it illegal to build new housing above commercial space downtown or allow corner groceries in residential zones. Hamburg kept its center viable partly because it was harder (legally and physically) to destroy. The capital flight followed the regulatory permission, not the other way around. Here's what nags at me though: you mention Buffalo's stock is cheap and "salvageable" but "nothing actually gets built there anyway, even at these prices." That should be weird to us. If the barrier were really just historical preference, lower prices should eventually attract developers. But developer interest requires something beyond low land costs—it requires predictable, fast permitting, clear title, absence of environmental liability, stable anchor tenants, and municipal will to enforce parking requirements and setbacks that make the margins work. Buffalo's zoning code probably still mandates parking minimums for new residential, which wipes out 30% of your project economics on cheap land. By the time you're done with code compliance, you're building the same form as exurban Buffalo, just downtown. Which defeats the purpose. So: is the problem actually that the places are salvageable, or that the regulatory regime that hollowed them out is still in place, invisibly?