That's the grade-school explanation, but it's inadequate, as the US population is only about 1.5 times the size it was when I was a kid, yet prices are maybe 4-8 times as high.
1) I'm not an economist, but why would price and population increase be a 1:1?
2) Your math is a wild oversimplification. California's population has grown 2.5x since 1960, and I imagine rents have gone up even higher. Higher rent forces companies to raise their salaries, which gives consumers more cash, which allows product price tags to raise. And if a company can sell someone in California a higher-priced product, why shouldn't they charge someone in, say, Alabama the same?
While we're at it, people are making more real estate all the time. Coastal cities like New York, San Francisco, Tokyo, etc. have major portions built on artificial landfill that's extended the coastlines into the adjacent bays/rivers, filled in marshlands, etc.
Lifelong San Franciscan here. The increase of land developed for housing throughout the Bay Area over the past decades has been piddling, and filling in marshes and coastlines is environmentally problematic, and increasingly vulnerable to sea level rise and flooding.
For thousands of years, inhospitable regions such as deserts have been made habitable through artificial means such as irrigation -- otherwise Las Vegas wouldn't exist.
And now that well water is running out, and global warming is making large swaths of the West sweltering and nigh-uninhabitable during the summer, and turning forests into dried-out tinderboxes.
Trust me, new San Franciscos and New York Citys aren't being built "all the time."
The place I'm sitting right this moment, atop one of the steep hills surrounding downtown Cincinnati, was accessible only to wealthy people with private transport until the inclines were built in the 1870s, and then the roads when automobiles came along.
Surely I don't have to point out that no new game-changing transportation technology has emerged since the invention of gas engine to similarly revolutionize the accessibility of people to get themselves and furniture up steep hills. Tech innovation is not infinite.
whatever writers gave Luthor that line in the movie didn't know what the hell they were talking about.
Dude, chill. There are exceptions for every maxim, but the line was far more true than it wasn't. (The problem with Luthor's plan was the landmass the crystals created was... not great, in terms of habitability.)
(Not to mention, how was he going to defend his claim to the new land? With what army?)
Honestly, I think it's basically like the recent price gouging at gas pumps and grocery stores. Once the factors causing inflation die down, prices could go down again, but the greedy bastards running the businesses keep the prices artificially high because they can.
Well, that's a factor also, sure.
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