Watch the video I liked to above. It's about a person that owns a laundromat in SF who wants to convert the building to affordable house. He basically wants to do the right thing, but the regulations make it impossible. It was EYE OPENING for me.
There's an old saying "your margin is my opportunity" and I suspect that the current crop of homes that are built have decent margins, but in a deregulated market an entrepreneur could come in offer more affordable housing options with lower margins.
You can see this in vehicles. Nobody complains about the vehicle affordability problem because there are far fewer regulations in the transportation industry (don't get me wrong, there are regulations, but not a constraining as you see in the housing market). There's a vehicle at every price point. You got bikes, then ebikes, mopeds, scoters, motorcycles, sub compacts, compacts, full size, trucks, suvs, and all the way to crazy expensive sports cars.
You don't see that in house because affordable housing is not a good business. It's impossible to offer options at the lower end of the market because of zoning laws, environmental impact regulations, a difficult permitting process, nimby's, and affordable housing politicians that are really big proponents of affordable housing except "they have question about this particular housing project."
Here is a terrific video that everyone should watch that shows how insanely difficult it is to make affordable housing. A
https://www.youtube.com/watch?v=ExgxwKnH8y4
Sometimes what you need is less government regulation, not more.
edited sentence "You don't see that in house it's not a good business." to You don't see that in house because affordable housing* is not a good business.
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What surprises me about Google is not that its changing, but that it's taken so long to change.
https://royalsociety.org/topics-policy/projects/low-carbon-e....
What about the energy to run the HB reaction? It's super high temp and high pressure. Is there a zero carbon way to make that?
The history here is complex and very unsatisfying due to gaps in the historical record, but it' darn interesting.