Also, strictly speaking, building is not the only solution. Curbing demand by making the city less attractive would also be a solution.
Also, strictly speaking, building is not the only solution. Curbing demand by making the city less attractive would also be a solution.
And in Berlin, I've sometimes seen graffiti along the lines of "cleaner walls == higher rents". So making the city less appealing is already part of the anti-gentrification arsenal.
* for the record, I'm not actually planning to nuke London.
"Why should I pay higher rents or deal with worse traffic/more crowded infrastructure just because you think my neighborhood is suddenly cool or because you're looking to stash a bunch of money in my country?"
And if your rent went up, supply didn't. Supply, not gentrification, is the problem in the SF/NY/Londons of the world.
You also seem to have missed the "or" presented by my hypothetical low-to-medium-density-city-dweller: either rents and housing prices get higher when you decide to move to my area, or my life changes in ways I don't want as a side effect of your increased supply.
So now let's imagine I own property and can vote, etc. Which of those scenarios do you think this person is going to support? The one that at least gives me a nice valuable house, I'm betting. You still want to move here? Make it worth my while $$$-wise.
I don't think most policy proposals for increasing density have enough obvious upsides for the incumbents to be very realistic.
You only get the realise the benefits of increased property values if you move away.
A more valuable house also means more property taxes (unless you live in CA).
Unless the annual appreciation in value of your house is sufficient to quit your job and live on. The risk of course is, will it continue indefinitely.